From: Piqa RavenHeart Subject: (utah-astronomy) utah-astronomy information Date: 01 Nov 2000 08:33:05 -0700 Utah-Astronomy Email List Information ***** Please Retain this Message!!! **** This email message is an update and reminder of various aspects of email lists in general, and specifically the utah-astronomy email list. This will be sent out periodically for new members and old members alike. A few notes to remember when using an email list: 1. Please make sure that your email client is sending messages in a traditional text format; html email or other rich text styling only works on some email clients and would be a distraction to those who use traditional email software. 2. Please make sure you are posting to the correct address with the email address you have subscribed with. If you try to post with another email address, your message will not be posted. Rather, it will be bounced to the list administrator and you may receive a personal email with more information. 3. Please DO NOT forward on general information types of mails to the list such as virus warnings, boycott issues, or other such emails which may or may not have any basis in reality. 4. If you change email addresses, please remember to unsubscribe with your old address and resubscribe with your new address. 5. For the subscribe/unsubscribe form, please visit the web page located at: http://www.xmission.com/~lucyblue/utahastro.html 6. For communicating with majordomo, remember the following points: To post to the list, mail to: utah-astronomy@lists.xmission.com For subscribing, unsubscribing, and other majordomo commands (info, help, etc): majordomo@lists.xmission.com To contact the list administrator, email: owner-utah-astronomy@lists.xmission.com * * * To Unsubscribe * * * To unsubscribe from this list send email to: majordomo@lists.xmission.com with "unsubscribe utah-astronomy" in the body of the message. (don't include the quotes, and do remove the subject all signatures) Please do NOT send subscribe/unsubscribe requests to utah-astronomy@lists.xmission.com. This is the list address and everyone on the list will receive your unsubscribe request. Thanks for being on the list! Cynthia S. LucyBlue@Softhome.net or owner-utah-astronomy@lists.xmission.com or lucyblue@xmission.com -- "What does that mean?" "It means the Matrix cannot tell you who you are." http://www.utahdogs.com http://goin.to/Chronicles - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Richard Tenney Date: 02 Nov 2000 08:16:49 -0800 (PST) Hubble's latest: http://www.cnn.com/2000/TECH/space/11/02/hubble.galaxy.collision/index.html __________________________________________________ Do You Yahoo!? From homework help to love advice, Yahoo! Experts has your answer. http://experts.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Joe Borgione Subject: (utah-astronomy) Light Show Date: 04 Nov 2000 16:13:26 -0700 Did anybody else see the aurora on 11-3 between the hours of about 9:00 pm and midnite? From Summit county the view to the north northwest became quite red, turning at time to blues green and then to yellow-white. The red colours then started wrapping a bit eastward. It was quite a treat! Joe Borgione - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Paul Witte Subject: RE: (utah-astronomy) Light Show Date: 04 Nov 2000 23:15:34 -0700 ------ =_NextPart_000_01C046B5.25CA1740 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable *sigh* Why do I always miss these things? Mark Dakins was telling me = there used to be (or is) a phone list to notify people when someone = spots an aurora. Does this exist? If so, I'd like to know how to get = on the list. --Paul ---------- Sent: Saturday, November 04, 2000 4:13 PM Did anybody else see the aurora on 11-3 between the hours of about 9:00 pm and midnite? From Summit county the view to the north northwest became quite red, turning at time to blues green and then to yellow-white. The red colours then started wrapping a bit eastward. It was quite a treat! Joe Borgione - To unsubscribe from utah-astronomy, send an email to = "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------ =_NextPart_000_01C046B5.25CA1740 Content-Type: application/ms-tnef Content-Transfer-Encoding: base64 eJ8+IigGAQaQCAAEAAAAAAABAAEAAQeQBgAIAAAA5AQAAAAAAADoAAEIgAcAGAAAAElQTS5NaWNy b3NvZnQgTWFpbC5Ob3RlADEIAQ2ABAACAAAAAgACAAEEkAYAYAEAAAEAAAAMAAAAAwAAMAIAAAAL AA8OAAAAAAIB/w8BAAAAYQAAAAAAAACBKx+kvqMQGZ1uAN0BD1QCAAAAAHV0YWgtYXN0cm9ub215 QGxpc3RzLnhtaXNzaW9uLmNvbQBTTVRQAHV0YWgtYXN0cm9ub215QGxpc3RzLnhtaXNzaW9uLmNv bQAAAAAeAAIwAQAAAAUAAABTTVRQAAAAAB4AAzABAAAAIgAAAHV0YWgtYXN0cm9ub215QGxpc3Rz LnhtaXNzaW9uLmNvbQAAAAMAFQwBAAAAAwD+DwYAAAAeAAEwAQAAACQAAAAndXRhaC1hc3Ryb25v bXlAbGlzdHMueG1pc3Npb24uY29tJwACAQswAQAAACcAAABTTVRQOlVUQUgtQVNUUk9OT01ZQExJ U1RTLlhNSVNTSU9OLkNPTQAAAwAAOQAAAAALAEA6AQAAAAIB9g8BAAAABAAAAAAAAAITTwEEgAEA IAAAAFJFOiAodXRhaC1hc3Ryb25vbXkpIExpZ2h0IFNob3cA5goBBYADAA4AAADQBwsABAAXAA8A IgAGADQBASCAAwAOAAAA0AcLAAQAFwANADMABgBDAQEJgAEAIQAAAEM3QTc2NUZEQTZCMkQ0MTFB NjFFMDA1MEJGMTk1OTZFADkHAQOQBgBsBQAAFAAAAAsAIwAAAAAAAwAmAAAAAAALACkAAAAAAAMA LgAAAAAAAwA2AAAAAABAADkA4Fivzu9GwAEeAHAAAQAAACAAAABSRTogKHV0YWgtYXN0cm9ub215 KSBMaWdodCBTaG93AAIBcQABAAAAFgAAAAHARu/Or/1lp8iyphHUph4AUL8ZWW4AAB4AHgwBAAAA BQAAAFNNVFAAAAAAHgAfDAEAAAASAAAAcXVlc3RvcnRAaG9tZS5jb20AAAADAAYQHVi8TgMABxAK AwAAHgAIEAEAAABlAAAAKlNJR0gqV0hZRE9JQUxXQVlTTUlTU1RIRVNFVEhJTkdTP01BUktEQUtJ TlNXQVNURUxMSU5HTUVUSEVSRVVTRURUT0JFKE9SSVMpQVBIT05FTElTVFRPTk9USUZZUEVPUExF VwAAAAACAQkQAQAAANkDAADVAwAAkwYAAExaRnX7k6lP/wAKAQ8CFQKkA+QF6wKDAFATA1QCAGNo CsBzZXTuMgYABsMCgzIDxgcTAoO6MxMNfQqACM8J2TsV/3gyNTUCgAqBDbELYG7wZzEwMxQgCwoS 8gwBEmMAQCAqAJBnaCoAICBXaHkgZG+IIEkgB0B3YXkEINJtBAJ0aAeQZRyhC4AoZ3M/G0BNCsBr IHhEYWsLgAQgHBAckWV8bGwdMRxQHPIEkBzwda0R8GQcoBuwYhzwKAWxxQQAKRvgIHBoAiAc8I0e 0HMFQCABbm90BpCxG4BwZW8LUBzwdxzAnQOgcwNwImAhMXNwIfCbBCADkWEIcAWwYS4bQJxEbweR HREEIGV4IXGpHXFJZiMBLBvAJx/g7R7QaxzxG7BrIeAH4CEQ6wfgIAFnEgAgAiAcoiFTRi4KhQqF LS1QJCBsRyjMCvQe0DE4MALRafAtMTQ0DfAM0CvjC1ncMTYKoANgHqBjBUApoF8uBgqHLLsMMC2G RgNhOicvDi2GDIIgSiTAIEL5BbBnaSEhLq8vvQZgAjDXMO8x+wYQdAhwZBwgJiAwTm92ZQbQBJAg MA40JiAB0CuAIDQ6MTAzIFBNM48vvVRvSzXPMft1AZBoLR5wdCMDYCHgbXlAIWJzLtZ4HGIzQS4F oG053zSeuHViai3BO/8x+yg93H0gwEwbATVhJ1EqDysTM542LIcUIgwBLYZEaR/g9QBweQbgZBuA HrAc4RHwxx8zJBUn8jExLTmQIDB8dHcJ4SgjIRAIcAQgb88l4AGgCGAFQDk6K4AKhdxwbSPhH+Ac YGQDAB6gdx1xMKJB0W0cYAVABaB19wIwG4AoMnYIkCdzKDIh4H0AIGhQ9EuQIYAKhSAwY9JhHyFx dU5xIBYBJiD/N8EDAB7xN7AcoAdxH/MKQV8EIAnDTeMcsSgRbwqFebsesScgLSLATnEkgVQoQf8W AU+BFZBMQlWzIYAKwB6g5R/gdyRgcHBTwyAgT2HeZT4hHBALICSBSVHmHmLPUtQg4D5AWkB0ISjM Ms//KRcozQqFO8EfoACAQfAE8v8gMQNSPc0mIBHwTgEDkThw1wtwAyAgASIAwGoFsBugdQRgQD8q ImAWA/BRMSL7YMo93CIgkCgUSVNMgSgyeQeBc2EnwCi2MJAgcm69AhByAMAiACgBKAFkGwD/UcFM YQXAFgA+QAiQUEAe8f8rsCKQI9If4AbwThFpRAQgy2LSYBYiHMBscGfgUJXjaWAfIWFkZBYABBAk g78h0h+iUsEtoQQgaAF5CGG/aS5GzxoXLYYKhRUhAHYgAAAAAwAQEAAAAAADABEQAQAAAEAABzAg tQqR70bAAUAACDAgtQqR70bAAR4APQABAAAABQAAAFJFOiAAAAAAAwANNP03AADilg== ------ =_NextPart_000_01C046B5.25CA1740-- - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: karen vanderhule Subject: Re: (utah-astronomy) Light Show Date: 04 Nov 2000 23:35:46 -0800 Hey group, I did see some activity last night about that time. A dull red along the mountain tops was about it. The sky was so inviting tho I got my wifes 10 inch out and cruised the void. Saturn and Jupiter were equally majestic and M-42 showed a lot of nebulosity and I see more green in it every year it seems. What's with that? Ron Vanderhule, member OAS Joe Borgione wrote: > Did anybody else see the aurora on 11-3 between the hours of about 9:00 > pm and midnite? From Summit county the view to the north northwest > became quite red, turning at time to blues green and then to > yellow-white. The red colours then started wrapping a bit eastward. It > was quite a treat! > > Joe Borgione > > - > To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. > For information on digests or retrieving files and old messages send > "help" to the same address. Do not use quotes in your message. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Patrick Wiggins Subject: (utah-astronomy) Re: Light Show Date: 04 Nov 2000 23:53:47 -0700 Paul Witte wrote: > > *sigh* Why do I always miss these things? Mark Dakins was telling me there used to be (or is) a phone list to notify people when someone spots an aurora. Does this exist? Hi! I routinely rebroadcast notices to members of astronomy clubs in Utah when an increased chance of an auroral display is forecast. I did receive one for Friday night but it forecast sightings only as far south as Idaho so I did not send it out. Bummer... Patrick :-) - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Patrick Wiggins Subject: (utah-astronomy) Re: Light Show Date: 04 Nov 2000 23:56:03 -0700 Joe Borgione wrote: > > Did anybody else see the aurora on 11-3 between the hours of about 9:00 > pm and midnite? Anthony Arrigo emailed that he had seen a display lasting about half an hour from his site in Jeremy Ranch. Patrick - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Marilyn Smith" Subject: Re: (utah-astronomy) Light Show Date: 05 Nov 2000 00:39:57 -0700 I was out with my 8" Cave telescope here in East Mill Creek from about dusk until 11:30 last night trying to get a glimpse of asteroid 752 Sulamantis before is occults Mu Geminorum on Nov. 20, as detailed in Nov. S&T. I found all the nearby stars in the magazine's star chart, but no sign of the asteroid, nor did I sight any aurora. However, my view to the north and northwest is marginal due to obstructions and city lights. Bob Grant - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Patrick Wiggins Subject: (utah-astronomy) Re: Light Show Date: 05 Nov 2000 13:40:16 -0700 Marilyn Smith wrote: > > I was out with my 8" Cave telescope here in East Mill Creek from about dusk > until 11:30 last night trying to get a glimpse of asteroid 752 Sulamantis > before is occults Mu Geminorum on Nov. 20, as detailed in Nov. S&T. I found > all the nearby stars in the magazine's star chart, but no sign of the > asteroid, nor did I sight any aurora. However, my view to the north and > northwest is marginal due to obstructions and city lights. Hi! New data shows the predicted track has moved well to the east so we probably will not see the event here in the west. More info at http://www.lunar-occultations.com/iota/asteroids/astrndx.htm Patrick - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Patrick Wiggins Subject: (utah-astronomy) Re: Sulamitis ephemerides Date: 05 Nov 2000 13:54:04 -0700 Marilyn Smith wrote: > > > > I was out with my 8" Cave telescope here in East Mill Creek from about dusk > > until 11:30 last night trying to get a glimpse of asteroid 752 Sulamantis > > before is occults Mu Geminorum on Nov. 20 I forgot to mention that to get accurate current ephemerides on any known asteroid you can go to the IAU's Minor Planet Ephemeris Service at http://cfa-www.harvard.edu/iau/MPEph/MPEph.html (where it asks for an observatory code, if you don't have one just leave that space blank). Also, since the asteroid is nearly magnitude 14, spotting it with your scope could be difficult. Oh, and I think the asteroid in question's name is spelled "Sulamitis". Cheers! Patrick :-) - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) Frankenstein Date: 06 Nov 2000 09:04:55 -0800 (PST) I finally got the 5" f/9 up and running last Thursday night, and had some views of Jupiter, Saturn, and a few of the brighter DSO's. My first view of Jup was total disappointment. I gave the objective an hour to cool down, and the view was much better. Seemed dimmer than a 5" objective should show this object; secondary color was evident, but no worse than much some longer doublets I've used. Saturn was a surprise. I had a hard time seeing any secondary color around it at all. Of course it was dimmer at the same magnification. I was not wowed by the views. The star-test showed a tiny bit of astigmatism, so the lens may need re-seating in it's cell, but not enough to degrade low-power images much. This scope, on a German equatorial mount, requires a commitment. It is heavy, massive, tall. It was very convenient in use, though, the eyepiece was always at a comfortable level, objects were easy to find. (I used a Telrad). The clock-drive on the old Jaegers mount was a nice convenience. It was funny watching the planets slowly trace out little circles as the drive demonstrated it's periodic error. I really have to say, though, that given a choice, I'd opt for my 6-inch Newtonian instead. Images with it were much crisper, brighter, and of course there was absolutely no secondary color at all. This f/8 scope uses a 1" secondary for minimal obstruction effects. A refractor takes some getting used to. I suspect it will be easier to use once mounted on a "Weighless" mount for visual use. I had hoped to try it out again on Saturday night, but illness kept me in (darnit!) I'm keeping an open mind for now, and plan to use this scope some more, but my prefference for Newtonians (of roughly equal aperture)seems justified at this point; conventional doublets just can't cut it at medium and high powers, especially at shorter f-ratios (f/10 and under). Chuck __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) Re: Frankenstein Date: 06 Nov 2000 09:14:13 -0800 (PST) I wanted to be clear that, yes, I know there are doublets out there that are outstanding performers. But, they are the exception to the rule, not manufactured en masse, (or at all any more, in some cases) and not available to the rank-and-file amateur astronomer. So I stand by my statement that a short, conventional doublet is no match for a roughly same-aperture Newtonian with minimal obstruction. If your doublet defies this, you have one of the lucky exceptions. Chuck __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Brent Watson" Subject: (utah-astronomy) Mirror Grinding Class Date: 06 Nov 2000 11:24:12 -0700 As winter is now beginning to show its cards, I am offering an indoor = astronomy activity. I will be starting a new mirror grinding class. Some = of you already indicated your interest at a SLAS meeting in the Spring, = and I have called you with info. For those of you who haven't, here's the = scoop. The first meeting will be held this Wednesday, November 8th at Skypark = Airport. It will be an introduction and general information class. We'll = discuss what mirror to make and distribute a spreadsheet to help make the = decision. Following this first class, all participants will need to order = their mirror kits and fabricate their benches. When all are ready, (about = 4 to six weeks later) we'll meet on a weekly basis and make the mirrors. = I strongly suggest at least a 10" mirror. Cost for the class will be whatever it costs you for materials. If you = are interested in participating, e-mail me at "bjwatson@iomega.com" . = We'll meet in the parking lot at 7:00 pm this Wednesday and then go to my = hangar for the class. Brent - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: skylinc Subject: Re: (utah-astronomy) Mirror Grinding Class Date: 06 Nov 2000 12:17:03 -0700 Give us an example of material costs. Ray Harmon - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Brent Watson" Subject: Re: (utah-astronomy) Mirror Grinding Class Date: 06 Nov 2000 12:30:48 -0700 A 10" mirror kit from Newport (www.newportglass.com) is $219.95 and a = 12.5" is $349.95. You will also need to aluminum coat the mirror, about = $40-$50. A secondary mirror will be in the ballpark of $25. This gives = you the optical set to build a scope around. A standard Dob can be = finished using these components for about another $150 and up. You need = only the mirror kit for the class. Bottom line is a 10" for about $435 and a 12.5 for about $575. This is = quite a bit less than buying a new dob and in addition, you get the scope = you really want. Bragging rights are included. Brent >>> skylinc@sprintmail.com 11/06/00 12:17PM >>> Give us an example of material costs. Ray Harmon - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.c= om" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: ("David Dunn") Subject: (utah-astronomy) The Leonids to Battle the Moon Date: 13 Nov 2000 12:54:00 -0700 ---Original Message--- As if defending his territory against intruders Leo the Lion will try his best to overcome the bright half moon late next week. The annual Leonid meteor shower is predicted to peak on the mornings of November 17 and 18. Unfortunately this year the bright half moon will lie close to the radiant obscuring many of the faint Leonids, which were a major portion of last years display. Experts are predicting a less than impressive display as the Earth skims the outer regions of comet dust left behind by comet Temple-Tuttle. This combined with the moonlight will make it highly unlikely a repeat performance of last years meteor storm will reoccur. Rates could be near 100 per hour at maximum but no one knows for certain. At least this year we are rather sure as to when any enhanced activity could occur rather than spending the entire morning waiting for something to happen. Our first opportunity occurs on Friday morning November 17 when the earth passes close to the comet dust left behind in 1965 and 1932. This will occur near 8:00 Universal Time (UT) which corresponds to 3:00 AM Eastern Standard Time and midnight Pacific Standard time. Those in the eastern half of North America will be favored to see the most meteor activity as the radiant will lie high in the sky at this time. Those situated along the west coast will have a low radiant altitude which will reduce the activity significantly. If your skies are clear then plan to start observing at least one hour before the time of maximum activity. Face toward a portion of the sky so that the moon is out of your field of view. Also remember to look up high enough so that none of your view is wasted on the ground. This corresponds to at least an altitude of 45 degrees. Scientific data can be obtained by simply counting the number of Leonids and non Leonids seen. Shower association will be easy as the Leonid meteors will all have parallel paths and come from the same general area of the sky. They will also have a similar velocity. Of course this all changes if you change the direction in which you are facing. Non Leonids (sporadics) can travel in any direction at any velocity. If you are familiar which the magnitude system it is also helpful to list the magnitude of the faintest star you can see in your field of view. Typical estimates should be near +5.0. Meteor reports can be sent to me at: lunro.imo.usa@home.com and to Sky & Telescope at: observers@skypub.com On Saturday morning November 18 there exists two more opportunities for enhanced Leonid rates. The first occurs at 3:45 UT which is too early for North American observers. The Leonid radiant will be below the horizon at this time in North American but well placed for Europe and Africa. This enhancement may occur as the earth passes through the outer fringes of the dust trail left behind in 1733. The last opportunity occurs some four hours later near 07:50 UT. Eastern North America and South America will be the favored locations for this enhancement. This corresponds to 2:50 AM EST and 11:50 PM (11/17) PST. At this time the earth will pass the outer edges of the dust trail created in 1866. Once again rates are not expected to be particularly impressive, especially when compared to the storm rates that were witnessed last year. For more information on observing meteors visit the Sky & Telescope Web Pages at: http://www.skypub.com/sights/meteors/meteorwatch.html A weekly preview of current meteor activity is also published each Thursday at: http://www.amsmeteors.org/lunsford/ Clear Skies! Robert Lunsford Secretary General of the International Meteor Organization Visual Meteor Program Coordinator of the American Meteor Society Meteors Section Coordinator of the Association of Lunar & Planetary Observers ================================================================== AstroAlert is a free service of SKY & TELESCOPE magazine, 49 Bay State Rd., Cambridge, MA 02138, U.S.A. This e-mail was sent to AstroAlert subscribers. If you feel you received it in error, or to unsubscribe from AstroAlert, please see our unsubscribe form at http://www.skypub.com/news/astroalert/unsubscribe.html or send a plain-text e-mail to majordomo@skypub.com with the following line (and nothing else) in the body of the message: unsubscribe meteor e-mail@address.com replacing "e-mail@address.com" with your actual e-mail address. ================================================================== - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Wayne Sumner" Subject: Re: (utah-astronomy) The Leonids to Battle the Moon (Absence Date: 13 Nov 2000 12:59:01 -0700 I will be out of the office until about December 11th. Please contact = Eric Peters for any work related issues. Thanks, Wayne Sumner - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Wayne Sumner" Subject: Re: (utah-astronomy) The Leonids to Battle the Moon Date: 13 Nov 2000 13:00:30 -0700 I will be out of the office until about December 11th. Please contact = Eric Peters for any work related issues. Thanks, Wayne Sumner - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Wayne Sumner" Subject: Re: (utah-astronomy) The Leonids to Battle the Date: 13 Nov 2000 13:02:09 -0700 I will be out of the office until about December 11th. Please contact = Eric Peters for any work related issues. Thanks, Wayne Sumner - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Piqa RavenHeart Subject: (utah-astronomy) Looping Email Date: 13 Nov 2000 13:07:03 -0700 Hrm... sorry for the reply to replies from Mr. Wayne Sumner who is apparently out of the office until December 11th. He has been removed from the list, we shouldn't get any more mails from him. Cynthia -- "What does that mean?" "It means the Matrix cannot tell you who you are." Utah Dogs: http://www.utahdogs.com Ilsik Haucil Chronicles: http://www.xmission.com/~lucyblue/Chronicles.html - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) Big binos Date: 15 Nov 2000 07:28:54 -0800 (PST) I noticed that the "Bear" brand big binos discussed here a month ago have been getting talked about on the sci-astro.am forum the last few days. Once again, Utah is ahead of the curve! Chuck __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "David Bennett" Subject: (utah-astronomy) Fwd: NASA program helps brain-injured patients reach for the stars Date: 16 Nov 2000 10:58:18 MST Hello Everyone...I thought this was a great article and thought y'all might be interested. It's amazing to see how astronomy can bridge so many gaps. Good luck to those watching the Leonids this weekend. I'll be doing so from Boulder, Colorado...if of course the weather agrees. Regards, Dave Bennett the_answer_is_42@hotmail.com > >FOR IMMEDIATE RELEASE November 14, 2000 > >NASA PROGRAM HELPS BRAIN-INJURED PATIENTS REACH >FOR THE STARS > > Brain-injured patients are exploring the stars with a >click of a computer mouse, thanks to a special hands-on, >interactive NASA education program. > > Through Telescopes In Education, sponsored by NASA's Jet >Propulsion Laboratory (JPL), Pasadena, Calif., patients are no >longer limited by their physical barriers and are free to >stretch their imaginations. > > In May, a dozen patients who suffered severe head >injuries took control of a science-grade reflecting telescope >located at the Mount Wilson Observatory, high above the Los >Angeles basin in the San Gabriel Mountains. Using the >Internet, patients at Delta Rehabilitation Facility for the >Severely Head-Injured in Snohomish, Wash., downloaded digital >images of nine deep space objects, including several galaxies >and star clusters. > > The director of Internet Services for the Brain Injury >Association of Washington, Paul Walsh, and his wife, Valarie, >began teaching basic astronomy to a roomful of Delta residents >nearly one year ago. Walsh discovered the patients were an >eager and attentive group of students. > > "People who have sustained a major brain injury often >have a keen and hungry intelligence that has been masked and >hidden behind the devastation caused by their injuries," Walsh >said. "I had a hunch astronomy might be a way to help tear >down the walls, not just mental and emotional, but literally >the physical walls that separate the residents of Delta from >the outside world." > > The program allows educators and students around the >world to remotely control research-quality telescopes and >charge-coupled device cameras created at JPL and located at >the Mount Wilson Observatory. All they need is a computer >modem and special astronomy software. > > Educators and students from all over the world get hands- >on, real-time interaction from the comfort of their >classrooms. This type of interaction enables students to >increase their knowledge of astronomy, astrophysics, and >mathematics; improve their computer literacy; and strengthen >their critical thinking skills. Hundreds of schools in the >United States and around the world, including Australia, >Canada, England and Japan, have used the telescope >successfully over the past seven years. > > In 1999, the program enabled more than 10,850 students, >located in 25 states, to conduct astronomical observations and >meaningful research. Use of the system is free except for the >purchase of the remote software, which controls the telescope. > > The Delta rehabilitation facility is associated with and >supports the Brain Injury Association, whose mission is to >create a better future through brain injury prevention, >research, education and advocacy. The prime mission at Delta >Rehab is to help residents "live life," all of it. To that >end, the staff, family members and volunteers from the >surrounding community do their best to bring life and >stimulation right to the residents. > > Telescopes In Education is a NASA education outreach >program sponsored by NASA's High Performance Computing and >Communications Learning Technologies Program, the Office of >Space Science and the Office of Human Resources and Education. >JPL space exploration missions, businesses and numerous >volunteers also support the program. Managed for NASA by the >California Institute of Technology, JPL is the lead U.S. >center for robotic exploration of the solar system. > > "We are sincerely grateful to JPL and Mount Wilson for >the Telescopes In Education Program. It's one of the best >down-to-earth ideas they've ever come up with," added Walsh. >"The program is all about tying people to the stars: the >young, the disabled, the city bound and the imagination >bound." > > Information on the Telescopes in Education program is >available at http://tie.jpl.nasa.gov/ . > > Delta Rehab information on this special project and a link >to the Brain Injury Association Web site is located at >http://www.nwlink.com/~filmdos/m111/infinityproject.htm . > > ##### > _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) E-mail availabililty Date: 16 Nov 2000 12:25:32 -0800 (PST) Beginning right away, I will no longer be checking email at all F-S-Su. If you need to speak with me on a weekend, please use the telephone. I still check email M-Th periodically. Thanks! Chuck __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) Meteor shower project Date: 16 Nov 2000 12:40:25 -0800 (PST) Most of you know there is a predicted Leonid peak sometime after midnight tonight. Mark Dakins and I corresponded last year about micro-meteorite collecting. He had a collector up and running at the time, I believe, whereas I hadn't tried it since childhood. Tonights shower gives an opportunity to collect samples for comparison with non-shower samples already taken, or taken at a later date. I'm not sure how long it takes for micro-meteorites to precipitate down from the upper atmosphere; it might be worthwhile to keep the collector going for a week or more after the shower. Samples could possibly be analyzed with a gas chromatograph, or lab spectrometer. Specific gravity measurements (thus density) could be done at home if you obtained a large enough sample, perhaps a gram or two. I have a friend who is a lab technician, with access to a spectrometer, if you have a sample to analyze we may be able to impose on his good grace. Just an idea, if you want to do more than just look. I don't know if Mark is still in the area, but I'm sure he'd share his design (made with a cardboard box and aluminum foil, IIRC) and collecting techniques if you contacted him. Rich Tenney, aren't you familiar with Mark's set-up? Chuck __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Patrick Wiggins Subject: (utah-astronomy) Who's where Date: 16 Nov 2000 13:51:32 -0700 Hi! I used to post Hansen Planetarium stuff like news releases and notices of things astronomical here until I got too many complaints about folks getting the same stuff here and through our postings to astronomy clubs here in Utah. So, I'm just curious if there is anyone on this list that that is not a member of a Utah astronomy club (and hence does not receive planetarium notices). Cheers! Patrick p.s. Don't forget the SLAS meeting tonight and the SPOC 2 meeting on Saturday. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "William Kelley" Subject: Re: (utah-astronomy) Meteor shower project Date: 16 Nov 2000 20:43:38 -0700 Chuck- I can do specific gravity determinations to better than a fifth of a gram with at least 10% accuracy, and would be pleased to help if anyone gets anything. Even the smallest micrometeorites will be magnetic so I would think a good magnet would be a good first screen. Bill ----- Original Message ----- Sent: Thursday, November 16, 2000 1:40 PM > Most of you know there is a predicted Leonid peak > sometime after midnight tonight. > > Mark Dakins and I corresponded last year about > micro-meteorite collecting. He had a collector up and > running at the time, I believe, whereas I hadn't tried > it since childhood. Tonights shower gives an > opportunity to collect samples for comparison with > non-shower samples already taken, or taken at a later > date. > > I'm not sure how long it takes for micro-meteorites to > precipitate down from the upper atmosphere; it might > be worthwhile to keep the collector going for a week > or more after the shower. > > Samples could possibly be analyzed with a gas > chromatograph, or lab spectrometer. Specific gravity > measurements (thus density) could be done at home if > you obtained a large enough sample, perhaps a gram or > two. I have a friend who is a lab technician, with > access to a spectrometer, if you have a sample to > analyze we may be able to impose on his good grace. > > Just an idea, if you want to do more than just look. > I don't know if Mark is still in the area, but I'm > sure he'd share his design (made with a cardboard box > and aluminum foil, IIRC) and collecting techniques if > you contacted him. > > Rich Tenney, aren't you familiar with Mark's set-up? > > Chuck > > __________________________________________________ > Do You Yahoo!? > Yahoo! Calendar - Get organized for the holidays! > http://calendar.yahoo.com/ > > - > To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. > For information on digests or retrieving files and old messages send > "help" to the same address. Do not use quotes in your message. > - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chris Clark Subject: Re: (utah-astronomy) Who's where Date: 16 Nov 2000 22:39:35 -0700 (MST) Hi Patrick, On Thu, 16 Nov 2000, Patrick Wiggins wrote: > So, I'm just curious if there is anyone on this list that that is not a member > of a Utah astronomy club (and hence does not receive planetarium notices). I'm not (yet?) a member of any clubs so I appreciate seeing the planetarium notices here. Is there a better place to get those notices (perhaps a web page)? Chris - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Marilyn Smith" Subject: Re: (utah-astronomy) Mirror Grinding Class Date: 18 Nov 2000 12:18:12 -0700 Those of you in this class may be interested in watching the "Telescope Building with John Dobson" video, available from the SL County Library system. The call number is "Video 681.412 Tel", and it is 90 minutes long. It shows the mirror grinding and tube/mount assembly. It belongs to the South Jordan branch, but can be reserved from any branch or the online "Lucas" system, and they will send it to your local branch for pickup. I am returning it to my local branch today, so it should be back in circulation early next week. Bob Grant - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: RStmarie@aol.com Subject: Re: (utah-astronomy) Who's where Date: 18 Nov 2000 16:58:20 EST Patrick, The complaints ought to be directed at people (like myself on occation) who simply send information back to the utah-astronomy mail list without knowing that it will unnecessarily duplicate the message. Your information is good and I think should be sent. My opinion, for what it is worth... Bob St. Marie - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Larry Frisk" Subject: Re: (utah-astronomy) Mirror Grinding Class Date: 19 Nov 2000 23:07:36 -0700 Thanks for the info Bob. I am going to grind a 10" and look forward to viewing this video. Larry Frisk ----- Original Message ----- Sent: Saturday, November 18, 2000 12:18 PM > Those of you in this class may be interested in watching the "Telescope > Building with John Dobson" video, available from the SL County Library > system. The call number is "Video 681.412 Tel", and it is 90 minutes long. > It shows the mirror grinding ... - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: Re: (utah-astronomy) Mirror Grinding Class Date: 20 Nov 2000 06:48:34 -0800 (PST) A word of warning concerning the Dobson video: DO NOT HAMMER NAILS WITH YOUR MIRROR BLANK, OR THROW IT ON THE GROUND! Other than than, Dobson is mostly sane throughout the rest of the video. Chuck --- Marilyn Smith wrote: > Those of you in this class may be interested in > watching the "Telescope > Building with John Dobson" video, available from the > SL County Library > system. The call number is "Video 681.412 Tel", and > it is 90 minutes long. > It shows the mirror grinding and tube/mount > assembly. It belongs to the > South Jordan branch, but can be reserved from any > branch or the online > "Lucas" system, and they will send it to your local > branch for pickup. I am > returning it to my local branch today, so it should > be back in circulation > early next week. > > Bob Grant > > > > - > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of > the message. > For information on digests or retrieving files and > old messages send > "help" to the same address. Do not use quotes in > your message. __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Reynolds, Rich" Subject: RE: (utah-astronomy) Fwd: NASA program helps brain-injured patien Date: 20 Nov 2000 08:06:46 -0700 Hi everyone, Jeanie and I enjoyed the Leonids an hour before and after the peak time of 12:45am. We counted 66 and had two doubles. It was fantastic. We picked a spot near Little Mountain and spread out a ground tarp, mattresses and many blankets on top the snow. Rich -----Original Message----- Sent: Thursday, November 16, 2000 10:58 AM reach for the stars Hello Everyone...I thought this was a great article and thought y'all might be interested. It's amazing to see how astronomy can bridge so many gaps. Good luck to those watching the Leonids this weekend. I'll be doing so from Boulder, Colorado...if of course the weather agrees. Regards, Dave Bennett the_answer_is_42@hotmail.com > > - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) RE: Leonid watch Date: 20 Nov 2000 07:41:11 -0800 (PST) I'm glad someone saw something. I watched from the backyard from midnight till a little after one, and saw NOTHING! Not one meteor. I had told myself that if activity warranted it, I'd stay out longer. But I saw NO meteors AT ALL! I'm speculating that they were there, but couldn't punch through the light pollution. Still, in one hour, I should have seen at least one bright sporadic. All I have to show for it is a cold. Please don't tell me the sky opened up ten minutes after I went in! Chuck --- "Reynolds, Rich" wrote: > Hi everyone, > > Jeanie and I enjoyed the Leonids an hour before and > after the peak time of > 12:45am. We counted 66 and had two doubles. It was > fantastic. We picked a > spot near Little Mountain and spread out a ground > tarp, mattresses and many > blankets on top the snow. > > Rich __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Howard W. Jackman" Subject: Re: (utah-astronomy) RE: Leonid watch Date: 20 Nov 2000 16:45:53 GMT Hey Chuck, sorry to have to be the bearer of bad news, but I was ale to observe a few Leonids for two nights in a row from my very light polluted front yard (limiting mag is usually around mag 2.5 - 3.0)On the 17th from 12:53am - 1:33am I saw 11 very nice Leonids and 1 sporadic, all but two of the Leonids left long and very bright green trails! I also got in a few observations on the 18th from 1:09am - 1:52am I only saw 7 Leonids and no sporadics but all the Leonids were at least mag 1 or brighter and they were very active around the Auriga/Gemini/Taurus area of the sky, had one very bright Leonid about mag -2 pierce the Pleiades right down the middle, all these had that green trail as well! Very nice to see since this was the first time I was able to see the Leonids at all, I guess working the night shift has its rewards, I'm really surprised that you didn't see any at all but the 18th was definitely slower for me than the 17th, I wish I had been able to stay out longer but it sure was cold! Howard >From: Chuck Hards >Reply-To: utah-astronomy@lists.xmission.com >To: utah-astronomy@lists.xmission.com >Subject: (utah-astronomy) RE: Leonid watch >Date: Mon, 20 Nov 2000 07:41:11 -0800 (PST) > >I'm glad someone saw something. I watched from the >backyard from midnight till a little after one, and >saw NOTHING! Not one meteor. I had told myself that >if activity warranted it, I'd stay out longer. But I >saw NO meteors AT ALL! I'm speculating that they were >there, but couldn't punch through the light pollution. > Still, in one hour, I should have seen at least one >bright sporadic. All I have to show for it is a cold. > >Please don't tell me the sky opened up ten minutes >after I went in! > >Chuck > >--- "Reynolds, Rich" wrote: > > Hi everyone, > > > > Jeanie and I enjoyed the Leonids an hour before and > > after the peak time of > > 12:45am. We counted 66 and had two doubles. It was > > fantastic. We picked a > > spot near Little Mountain and spread out a ground > > tarp, mattresses and many > > blankets on top the snow. > > > > Rich > > >__________________________________________________ >Do You Yahoo!? >Yahoo! Calendar - Get organized for the holidays! >http://calendar.yahoo.com/ > >- > To unsubscribe from utah-astronomy, send an email to >"majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. > For information on digests or retrieving files and old messages send > "help" to the same address. Do not use quotes in your message. _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: ("David Dunn") Subject: (utah-astronomy) RE: Leonid watc Date: 20 Nov 2000 09:46:00 -0700 I sat in my hot tub for 1/2 hour and saw 3 Leonids in Taurus. ------------------( Forwarded letter 1 follows )--------------------- Sender: owner-utah-astronomy@lists.xmission.com Reply-To: utah-astronomy@lists.xmission.com I'm glad someone saw something. I watched from the backyard from midnight till a little after one, and saw NOTHING! Not one meteor. I had told myself that if activity warranted it, I'd stay out longer. But I saw NO meteors AT ALL! I'm speculating that they were there, but couldn't punch through the light pollution. Still, in one hour, I should have seen at least one bright sporadic. All I have to show for it is a cold. Please don't tell me the sky opened up ten minutes after I went in! Chuck --- "Reynolds, Rich" wrote: > Hi everyone, > > Jeanie and I enjoyed the Leonids an hour before and > after the peak time of > 12:45am. We counted 66 and had two doubles. It was > fantastic. We picked a > spot near Little Mountain and spread out a ground > tarp, mattresses and many > blankets on top the snow. > > Rich __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: RStmarie@aol.com Subject: Re: (utah-astronomy) RE: Leonid watc Date: 20 Nov 2000 12:42:37 EST Hey Astro-folks, I had to work the night of the Leonids, but counted 17 of them from the jumpseat of a DC-10 on my way home to SLC later that night, despite going in and out of cloud for the first half of the trip home. Earlier, during the peak, I was too busy to look up. The night before I showed my crewmates the ISS as we passed Pueblo, Colorado and it passed in front of Cassiopeia. They were pretty skeptical until it appeared ontime and exactly where I said. Got to love that heavens-above.com website. Take a look and print out the "easily visible satellite passes" for an evening. For some reason this just amazes people. Then you can casually say, "aw, it's just rocket science." Way cool, and an excellent way to get people to look up. Mr. Dunn wins the award for best place to view the Leonids (in the hot tub). I think it would be a major step forward for the Salt Lake Astro Society from now on if he brought his hot tub up to all the Little Mountain star parties! That, and some good music, oh, and maybe we should start catering these affairs? Bob St. Marie - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: "Larry Frisk" Subject: Re: (utah-astronomy) RE: Leonid watc Date: 21 Nov 2000 00:13:17 -0700 I counted 8 from about 12:05 to about 1:25. What surprised me is that they all were going from East to West or West to East. I was viewing from my back deck which faces the East and took advantage of a large tree to block out the moon. Larry ----- Original Message ----- Sent: Monday, November 20, 2000 9:46 AM > I sat in my hot tub for 1/2 hour and saw 3 Leonids in Taurus. > ------------------( Forwarded letter 1 follows )--------------------- > Date: Mon, 20 Nov 2000 07:41:11 -0800 (PST) > To: utah-astronomy@lists.xmission.com > From: Chuck.Hards[chuckhards]@yahoo.com > Sender: owner-utah-astronomy@lists.xmission.com > Reply-To: utah-astronomy@lists.xmission.com > Subject: (utah-astronomy) RE: Leonid watch > > I'm glad someone saw something. I watched from the > backyard from midnight till a little after one, and > saw NOTHING! Not one meteor. I had told myself that > if activity warranted it, I'd stay out longer. But I > saw NO meteors AT ALL! I'm speculating that they were > there, but couldn't punch through the light pollution. > Still, in one hour, I should have seen at least one > bright sporadic. All I have to show for it is a cold. > > Please don't tell me the sky opened up ten minutes > after I went in! > > Chuck > > --- "Reynolds, Rich" wrote: > > Hi everyone, > > > > Jeanie and I enjoyed the Leonids an hour before and > > after the peak time of > > 12:45am. We counted 66 and had two doubles. It was > > fantastic. We picked a > > spot near Little Mountain and spread out a ground > > tarp, mattresses and many > > blankets on top the snow. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: DunnDave@aol.com Subject: (utah-astronomy) Accessory Case Date: 24 Nov 2000 22:39:51 EST --part1_37.d0add4e.27508e87_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I just found the Orion "Large Aluminum Case" that they sell for $44.95 + $6.30 S&H at Walmart. At Walmart it is an 18" Aluminum Case from Work Gear and is being sold for $17.43. Dave --part1_37.d0add4e.27508e87_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: 7bit I just found the Orion "Large Aluminum Case" that they sell for $44.95 +
$6.30 S&H at Walmart.  At Walmart it is an 18" Aluminum Case from Work Gear
and is being sold for $17.43.

Dave --part1_37.d0add4e.27508e87_boundary-- - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: David Moulton Subject: Re: (utah-astronomy) Accessory Case Date: 25 Nov 2000 12:46:15 -0700 DunnDave@aol.com wrote: > > I just found the Orion "Large Aluminum Case" that they sell for $44.95 > + > $6.30 S&H at Walmart. At Walmart it is an 18" Aluminum Case from Work > Gear > and is being sold for $17.43. > > Dave Does this have the cubed foam? I found the same case a Harbor Freight for a similar price ($20, I think), but it didn't have any foam in it. -- David Moulton dmoulton@rocketmail.com Carpe Ductum - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: DunnDave@aol.com Subject: Fwd: (utah-astronomy) Accessory Case Date: 25 Nov 2000 15:19:54 EST --part1_a5.df86b0f.275178ea_boundary Content-Type: multipart/alternative; boundary="part1_a5.df86b0f.275178ea_alt_boundary" --part1_a5.df86b0f.275178ea_alt_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit They have the diced foam. They are exactly the same as the Orion. The keys are even the same. --part1_a5.df86b0f.275178ea_alt_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: 7bit They have the diced foam.  They are exactly the same as the Orion.  The keys
are even the same. --part1_a5.df86b0f.275178ea_alt_boundary-- --part1_a5.df86b0f.275178ea_boundary Content-Type: message/rfc822 Content-Disposition: inline Return-Path: Received: from rly-yc01.mx.aol.com (rly-yc01.mail.aol.com [172.18.149.33]) by air-yc03.mail.aol.com (v77.14) with ESMTP; Sat, 25 Nov 2000 14:46:50 -0500 Received: from lists.xmission.com (lists.xmission.com [198.60.22.7]) by rly-yc01.mx.aol.com (v76_r1.19) with ESMTP; Sat, 25 Nov 2000 14:46:26 -0500 Received: from domo by lists.xmission.com with local (Exim 2.12 #2) id 13zlHB-0000mS-00 for utah-astronomy-gooutt@lists.xmission.com; Sat, 25 Nov 2000 12:46:21 -0700 Received: from [216.178.151.7] (helo=mail01.phoenixdsl.com) by lists.xmission.com with esmtp (Exim 2.12 #2) id 13zlH9-0000mN-00 for utah-astronomy@lists.xmission.com; Sat, 25 Nov 2000 12:46:19 -0700 Received: from rocketmail.com ([64.32.162.14]) by mail01.phoenixdsl.com (InterMail vK.4.02.00.05.01 201-232-116-105-101 license da4da6e5fc829a7858725236bede8deb) with ESMTP id <20001125194612.HAZQ1752.mail01@rocketmail.com> for ; Sat, 25 Nov 2000 13:46:12 -0600 Message-ID: <3A201707.2D77C327@rocketmail.com> X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.2.17-21mdk i686) X-Accept-Language: en MIME-Version: 1.0 References: <37.d0add4e.27508e87@aol.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-utah-astronomy@lists.xmission.com Precedence: bulk Reply-To: utah-astronomy@lists.xmission.com DunnDave@aol.com wrote: > > I just found the Orion "Large Aluminum Case" that they sell for $44.95 > + > $6.30 S&H at Walmart. At Walmart it is an 18" Aluminum Case from Work > Gear > and is being sold for $17.43. > > Dave Does this have the cubed foam? I found the same case a Harbor Freight for a similar price ($20, I think), but it didn't have any foam in it. -- David Moulton dmoulton@rocketmail.com Carpe Ductum - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. --part1_a5.df86b0f.275178ea_boundary-- - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: DunnDave@aol.com Subject: Fwd: FW: (utah-astronomy) Accessory Case Date: 26 Nov 2000 00:47:23 EST --part1_69.d7679ec.2751fdeb_boundary Content-Type: multipart/alternative; boundary="part1_69.d7679ec.2751fdeb_alt_boundary" --part1_69.d7679ec.2751fdeb_alt_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit It was on an end display by the tools and automotive. This was at the Layton store. --part1_69.d7679ec.2751fdeb_alt_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: 7bit It was on an end display by the tools and automotive.  This was at the Layton
store.

--part1_69.d7679ec.2751fdeb_alt_boundary-- --part1_69.d7679ec.2751fdeb_boundary Content-Type: message/rfc822 Content-Disposition: inline Return-Path: Received: from rly-yc01.mx.aol.com (rly-yc01.mail.aol.com [172.18.149.33]) by air-yc04.mail.aol.com (v77.14) with ESMTP; Sun, 26 Nov 2000 00:34:10 -0500 Received: from femail1.sdc1.sfba.home.com (femail1.sdc1.sfba.home.com [24.0.95.81]) by rly-yc01.mx.aol.com (v76_r1.19) with ESMTP; Sun, 26 Nov 2000 00:33:54 -0500 Received: from c700997-a.provo1.ut.home.com ([65.0.198.113]) by femail1.sdc1.sfba.home.com (InterMail vM.4.01.03.00 201-229-121) with SMTP id <20001126053333.WEHB14040.femail1.sdc1.sfba.home.com@c700997-a.provo1.ut.home.com> for ; Sat, 25 Nov 2000 21:33:33 -0800 Received: by c700997-a.provo1.ut.home.com with Microsoft Mail id <01C0572F.CAF1D660@c700997-a.provo1.ut.home.com>; Sat, 25 Nov 2000 22:33:54 -0700 Message-ID: <01C0572F.CAF1D660@c700997-a.provo1.ut.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Unknown Dave, I went to Walmart tonight and couldn't find the case. What department did they have it in? Maybe the Walmart in provo doesn't have it... --Paul ---------- Sent: Friday, November 24, 2000 8:39 PM I just found the Orion "Large Aluminum Case" that they sell for $44.95 + $6.30 S&H at Walmart. At Walmart it is an 18" Aluminum Case from Work Gear and is being sold for $17.43. Dave --part1_69.d7679ec.2751fdeb_boundary-- - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Richard Tenney Subject: (utah-astronomy) Aurora? Date: 26 Nov 2000 12:27:59 -0800 (PST) It was difficult to tell with the clouds last night, but the way the northern sky was lit up from my home in Lindon, and the column of light that extended straight up from the pole (also difficult to distinguish from a cloud), looked suspiciously like auroral activity to me. Did anyone from darker skies see anything last night (Saturday)? -Rich __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Mark Dakins Subject: (utah-astronomy) Scope and Dome for sale and Tube for free Date: 26 Nov 2000 20:43:34 -0700 As a few of you know and most don't I have accepted a job with IBM in Beaverton, Oregon (yeah, yeah, I know about the rain and clouds, but it is a good job.) Anyway I have a couple of things I would like to sell and one I would like to give away before I leave. So . . . For Sale 1) Orange Celestron C8 Super Polaris mount with Sky Sensor computerized drive Celest-ease 8x50 polar alignment finder 2x Barlow 25mm Orthoscopic eyepiece Desert Storm Shield scope cover This is an 1980's vintage C8. Although not the best C8 OTA ever made it is an OK scope. In addition to the 8x50 polar alignment finder the Super Polaris mount has a polar axis alignment scope built in. The Sky Sensor was an early attempt at a computerized, goto scope drive; it is very power hungry and becomes inaccurate if asked to do a long slew. However, it tracks just fine and goto's OK over limited distances. The Celest-ease is an accessory bolted to the back of the OTA. It includes an 1 1/4" visual back on its back, a 2" visual back on its top, a diagonal mirror that flips in and out to direct light to either visual back, and a telecompressor and barlow either of which can be flipped into the light path to the 2" back. The whole lot can be yours for only $1500.00, but contact me soon. I will be leaving for Oregon very soon. 2) 8' fiberglass radar dome still in its original shipping crate. This thing weighs very little (maybe 50 or 60 pounds.) There is no slot yet but this could become a nice (little) dome for the C8. $200.00 3) Telescope maker special. A piece of heavy duty fiberglass tubing. 20 1/4" ID, wall 1/4", 50" length (I don't know the weight but it is quite heavy.) Free to anybody who thinks they can use it and wants to come pick it up. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) astro-ecconomizing Date: 27 Nov 2000 09:49:49 -0800 (PST) Next time someone complains about the high cost of astronomy hardware, remind them that a little shopping around can really pay off. I just picked up a 2X, 1.25" brand-new barlow on Ebay for $11 total, shipped right to my door. A 10" full-thickness pyrex mirror, good to at least 1/8 wave, cost me $125 last year. A pair of 70mm binoculars was found on the net two months ago, brand-new, for $97. My friend Glen Warchol picked up a TeleVue Ranger tube assembly for $200. A TV Plossl for $25. The bargains are out there, but you have to look for them! Anybody else have a great deal they'd like to crow about? Chuck __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Patrick Wiggins Subject: (utah-astronomy) Re: astro-ecconomizing Date: 27 Nov 2000 11:30:14 -0700 And don't forget the C-8 that sold in Ogden for $100. Patrick :-) Chuck Hards wrote: > > Next time someone complains about the high cost of > astronomy hardware, remind them that a little shopping > around can really pay off. I just picked up a 2X, > 1.25" brand-new barlow on Ebay for $11 total, shipped > right to my door. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: skylinc Subject: (utah-astronomy) Runaway Universe Date: 27 Nov 2000 12:37:11 -0700 I watched NOVA's "Runaway Universe" Tuesday, November 21 As usual nova assumes the general public is too stupid to understand = the technical details, so they by-passed them altogether. They told = us that according to their calculations the Universe is not just = expanding but that it is accelerating. I understand how they can = figure the redshift of a particular supernova in a distant galaxy, = but I do not understand how they figure that galaxy is accelerating = without long-term observation. Also, If we are looking 10 billion = years into the past, how do we know that the galaxy is not coming = back towards us at our proper time. It would take another 10 billion = years or so for the light (leaving the distant galaxy right now) to = reach us. Maybe the galaxy has flown out twice as far slowing the = entire time until it has started moving back towards us. How would we = know this unless we wait for the light. The show mentions nothing = about long term observation, only a handful of quick prime supernova = observations. Maybe they can detect the redshift moving during observation, or = during several observations? I know we have some brilliant people in the club =AD so please = respond and let me in on the technical details. Thanks Ray Harmon ray@skylineprinting.net - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) Re: Runaway Universe Date: 27 Nov 2000 13:38:31 -0800 (PST) Ray Harmon wrote: >As usual NOVA assumes the general public is too stupid >to understand the technical details, so they by-passed >them altogether. The problem with TV programming, like printed media, is lack of time (or space), so something will always have to be left out. Heck, I've been into astronomy and physics for 30 years, and I'm probably too stupid to understand the details myself! The universes' expansion has something to do with "vacuum energy", which is a quantum effect, not part of everyday Newtonian physics that define the world of humans. As the universe expands, the vacuum energy increases (there is more vacuum. Don't ask me how you can have more of "nothing".) Careful auditing of the detectable mass in the universe has shown that there is not enough mass for the universe's expansion to eventually halt, and reverse. Accelleration, (or, more accurately, the "cosmic constant") IIRC, is a prediction of Special Relativity. Perhaps a physicist on the list can fill in the details. You can also visit: http://astrosun.tn.cornell.edu/students/kornreich/curious/previous.html#w5 This site has many questions and answers related to cosmology. You will probably not get an intuitively understandable answer, since the mechanisms at play seem to be part of a non-Newtonian structure. The explanation is usually page after page of derivations, integrals, and assorted curves, all based on tables of variables only hinted at in the data! This is one for John Sohl at Weber to field! Chuck __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Mark Dakins Subject: Re: (utah-astronomy) Re: Runaway Universe Date: 27 Nov 2000 23:53:20 -0700 OK, my first degree is in experimental physics and I have been following this stuff since it was announced so I'll take a crack at a simple explanation of where this stuff came from and where we currently are (and also my opinion of it.) The theory is based on two different groups studies of very distant type 1A (I think) supernova. This type of supernova is thought to be a good "standard candle." That is, they are thought to ALL be approximately the same absolute brightness when at their peak. The studies were done to attempt to measure the "Hubble parameter." This number is usually called the "Hubble constant" but that is silly since it is not a constant. The Hubble parameter is the expansion rate of the universe. The expected result of the studies was that the Hubble parameter was decreasing and lots of interesting things (like the age and weight of the universe) can be determined by measuring what it currently is and how fast it is decreasing. However, unexpectedly both studies appeared to show that the expansion rate is actually increasing. If this is really happening we obviously need a replusive force to make it happen. That's where the vaccuum energy theories have come from. It's just people trying to think of ways to make it happen. As yet there is no direct evidence for this or any repulsive cosmic force. It's just infered from the supernova studies. OK, now my opinions. This stuff is real interesting and exciting, but is the accelerating expansion a "proven" measurement? I don't think so. There seem to me to be several assumptions in these studies. The top of this list is whether or not supernova billions of years ago (with a probable different mix of elements) are the same brightness as modern ones, also there are questions about both galactic extinction and intergalactic extinction that far back. If the results had been as expected these assumption would still have been worrying, but with such an unexpected and counter-intuitive result I think all the assumptions need to be suspect not just the one. Now does that mean that I don't believe the accelerating expansion theory? No, it just means I am not convinced yet. I need to see some other measurements using techniques other than supernova measurements. Hope that helps. Chuck Hards wrote: > > Ray Harmon wrote: > > >As usual NOVA assumes the general public is too > stupid > >to understand the technical details, so they > by-passed > >them altogether. > > The problem with TV programming, like printed media, > is lack of time (or space), so something will always > have to be left out. Heck, I've been into astronomy > and physics for 30 years, and I'm probably too stupid > to understand the details myself! > > The universes' expansion has something to do with > "vacuum energy", which is a quantum effect, not part > of everyday Newtonian physics that define the world of > humans. As the universe expands, the vacuum energy > increases (there is more vacuum. Don't ask me how you > can have more of "nothing".) > Careful auditing of the detectable mass in the > universe has shown that there is not enough mass for > the universe's expansion to eventually halt, and > reverse. Accelleration, (or, more accurately, the > "cosmic constant") IIRC, is a prediction of Special > Relativity. > > Perhaps a physicist on the list can fill in the > details. > > You can also visit: > > http://astrosun.tn.cornell.edu/students/kornreich/curious/previous.html#w5 > > This site has many questions and answers related to > cosmology. > > You will probably not get an intuitively > understandable answer, since the mechanisms at play > seem to be part of a non-Newtonian structure. The > explanation is usually page after page of derivations, > integrals, and assorted curves, all based on tables of > variables only hinted at in the data! This is one for > John Sohl at Weber to field! > > Chuck > > __________________________________________________ > Do You Yahoo!? > Yahoo! Shopping - Thousands of Stores. Millions of Products. > http://shopping.yahoo.com/ > > - > To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. > For information on digests or retrieving files and old messages send > "help" to the same address. Do not use quotes in your message. - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) Re: Runaway Universe Date: 28 Nov 2000 12:10:27 -0800 (PST) Mark's point about "standard candles" is well taken. Even a small variation in luminosity can result in a large uncertainty over cosmic distances. Old stars are typically simple as far as their constituent elements, and small. They do not go supernova; only fairly young, very massive stars do. When we observe a supernova in a distant galaxy, we must remember that we are looking back in time, when there were not as many "heavy" elements present in the universe. Often called "metals" by astronomers, elements heavier than helium were not made during the Big Bang, but are the products of stellar evolution. Those early supernovae were very different, as far as their makeup, than close-by, recent supernovae. The far away ones are chemically simple, the closer ones (and thus recent) must be made of recycled material, therefore more complex. I've read that globular clusters contain some of the oldest stars, I've also read that they contain many massive stars. Obviously they are two distinct "generations", and therefore must be very different as far as makeup. Does anyone know of an observed supernova in a globular cluster? (Milky Way satellite or otherwise). As far as long-term observation of cosmological phenomenon, there can't be any such thing. Even if humans live for another million years before becomming extinct,(highly doubtful) that span is "the blink of an eye" in absolute terms. The sun wouldn't even be a fraction of the way around it's orbit of the Milky Way's center. IIRC, one orbital period is something like 225 million years! I think that is why scientists must resort to statistics, hoping that there are examples of every stage of galactic, stellar, and regional cosmological evolution scattered around the sky. Hey, a real discussion! Lets keep it up! Chuck __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chris Clark Subject: Re: (utah-astronomy) Re: Runaway Universe Date: 29 Nov 2000 00:34:55 -0700 (MST) Hi Gang, On Tue, 28 Nov 2000, Chuck Hards wrote: > Mark's point about "standard candles" is well taken. > Even a small variation in luminosity can result in a > large uncertainty over cosmic distances. While we're mentioning the assumptions cosmologists make when they look at the universe (the "standard candle" being but one prime example), let me ask your opinions on what seems like another big assumption: that the space between us and distant objects is uniformly empty. I've heard a few things about "dark matter", so I wonder: does anyone have a scientific "handle" on the non-glowing stuff? Is there any way to detect or measure it? (How could one detect non-radiating matter which lies millions of light years away?) When measuring the luminosity of distant objects, can we be sure that we're seeing "unimpeded light" from the source? How do we know we're not seeing things through a not-necessarily-uniform intergalactic fog? Is there some technique which allows us to "factor out" potential dimming effects? Cheerio, Chris - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: Re: (utah-astronomy) Re: Runaway Universe Date: 29 Nov 2000 10:05:02 -0800 (PST) --- Chris Clark wrote: > Hi Gang, > While we're mentioning the assumptions cosmologists > make when they look at > the universe (the "standard candle" being but one > prime example), let me > ask your opinions on what seems like another big > assumption: that the > space between us and distant objects is uniformly > empty. Hmm...I don't think that assumption is made in professional circles. Intervening material (dust and gas) can be inferred with spectroscopy. Non-radiating material between observer and object is detected by the absorbtion lines present in the objects spectrum. True, it takes some detective work on the part of the researcher to discern lines related to the object itself and any intervening material, but it can be done. > I've heard a few things about "dark matter", so I > wonder: does anyone have > a scientific "handle" on the non-glowing stuff? Is > there any way to > detect or measure it? (How could one detect > non-radiating matter which > lies millions of light years away?) There are two kinds of "dark matter": Baryonic, that is, the stuff that you, I, and stars are made of; and non-baryonic, the nature of which hasn't been determined by science as of yet. So far, non-baryonic matter is just a "place holder", until it can be detected directly. Right now, it's existence is only inferred from orbital velocity studies. Example: Stars in the spiral arms of the Milky Way are moving too fast in their orbits to be retained by the gravity of all the visible matter in the galaxy. Yet they stay in orbit. There must be more mass to the galaxy than we can currently detect, unless Isaac Newton was dead wrong, which is doubtful. > When measuring > the luminosity of > distant objects, can we be sure that we're seeing > "unimpeded light" from > the source? How do we know we're not seeing things > through a > not-necessarily-uniform intergalactic fog? Is there > some technique which > allows us to "factor out" potential dimming effects? Reddening, which is a scattering effect of space particles and gas, and absorption lines in spectra (see above) Mark Dakins, I'm counting on you to keep me honest! I only had two years of college physics, and since it wasn't my major, they didn't use Pavlovian teaching techniques! Chuck __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chuck Hards Subject: (utah-astronomy) Color perception Date: 29 Nov 2000 11:02:10 -0800 (PST) A few years ago, I noticed that my color perception is not the same in each eye. My right eye sees blues much more muted, and greenish, than my left. Also a bit dimmer. Strange, since my right eye is dominant. When I posted this to the atm-list this morning, another member sent me this link, which is truly fascinating. Check it out when you get a minute: http://www.redherring.com/mag/issue86/mag-mutant-86.html After reading it, think of what you might see in a telescope if you had the vision of the subject mentioned in the article. Chuck __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. ------------------------------------------------------------------------------- From: Chris Clark Subject: Re: (utah-astronomy) Re: Runaway Universe Date: 30 Nov 2000 02:21:32 -0700 (MST) Hi Chuck, On Wed, 29 Nov 2000, Chuck Hards wrote: > Hmm...I don't think that assumption is made in > professional circles. Hmm. Maybe I'm just _assuming_ that the pros are making an assumption about the relative opacity of space because I don't hear anyone talking about how such opacity is accounted for. :-) > Intervening material (dust and > gas) can be inferred with spectroscopy. Non-radiating > material between observer and object is detected by > the absorbtion lines present in the objects spectrum. I understand how the absorption spectra can reveal the _presence_ of matter, but does absorption spectra also reveal the _amount_ of such absorption? According to the way I think of it (please correct me if I'm way off base), the amount of light emitted from an object that reaches us here on Earth is: A. proportional to the amount of light originally emitted B. inversely proportional to the distance to an object C. inversely proportional to the amount of light absorbed by intervening matter The "Runaway Universe" program presents "A" as an independent assumption (the supernova "standard candle" idea). The program further presents "B" as a dependent assumption (we're inferring distance to an object based on an inverse relation to the object's brightness). Maybe I missed it (or maybe they just didn't mention it in the program), but I didn't pick up on any mention of absorption as another factor which might affect the apparent brightness of distant objects. Anyway, that's what triggered my pondering of the (non)uniformity of matter distribution in space and how we could possibly measure it. > Reddening, which is a scattering effect of space > particles and gas, and absorption lines in spectra > (see above) Hmm... I'm going to have to do some study on this reddening phenomenon. Thanks! Chris - To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.