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Re: [Utah-astronomy] Eclipse: moving shadow?
by Joe Bauman 23 Apr '14

23 Apr '14

I'm directionally dyslexic but I belive the moon was moving left to right. ------------------------------ On Wed, Apr 16, 2014 9:37 AM MDT Seth Jarvis wrote: >Hi Dion, > >Yes, Earth's shadow definitely drifts slowly right-to-left. > >It's not just that the Moon is orbiting the Earth. Other motions are involved. > >Simulating the eclipse in Starry Night I see a significant shift in the relationship between Earth's shadow and the background stars depending on your lat/long, so I'm guessing that there is a parallax effect produced by Earth's rotation that would cause a shift in where the shadow seems to be as observers rotate with the planet. > >Also, when you "freeze" your location and isolate yourself from Earth's rotation (e.g. hovering above the North Pole) there's still a slight but noticeable drift in the shadow relative to the stars - because we're in motion around Sun. > >Seth > > >-----Original Message----- >From: utah-astronomy-bounces(a)mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Dion Davidson >Sent: Wednesday, April 16, 2014 9:04 AM >To: Utah-Astronomy(a)mailman.xmission.com >Subject: [Utah-astronomy] Eclipse: moving shadow? > >I am working on processing some images from the Quarry Bend star party of the eclipse: >https://picasaweb.google.com/lh/photo/PfMBXArypRaGS_8Yzq_tMbjs7i-NclWSB9dbX… > > >I'm surprised that when I align the stacked images on Spica, not only does the moon move right-to-left, as expected, it seems the earth's shadow moves left-to-right. Is that real? Why would that be? > >n the image linked above you can see how the moons on the right lay over top of the shadowed portion of the next moon. I expected to see a nice earth-shaped shadow in the middle of the image once all the photos were aligned. These were taken with my Nikon D7000 riding piggy back on my telescope (fork-mount on a wedge), 10 minutes apart. > >Dion >_______________________________________________ >Utah-Astronomy mailing list >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy > >Send messages to the list to >Utah-Astronomy(a)mailman.xmission.com > >The Utah-Astronomy mailing list is not affiliated with any astronomy club. > >To unsubscribe go to: >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy >Then enter your email address in the space provided and click on "Unsubscribe or edit options". > >_______________________________________________ >Utah-Astronomy mailing list >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy > >Send messages to the list to >Utah-Astronomy(a)mailman.xmission.com > >The Utah-Astronomy mailing list is not affiliated with any astronomy club. > >To unsubscribe go to: >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy >Then enter your email address in the space provided and click on "Unsubscribe or edit options".

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Does Prostar still exist?
by Thomas Sevcik 23 Apr '14

23 Apr '14

Has anyone on this list dealt with a company named Prostar-Telescope Making & Upgrading? I ordered a secondary mirror through them on the 30th of March and they withdrew the funds on the 6th of this month. But I haven't received any word if the order was shipped. The email I sent bounced back as failed and no has ever answered the phone there at 614-855-5341. Don't try the one number; 1-866-227-6240 they have listed for answering your questions - you'll get a automated answering machine who wants you to give your credit card number for a $100 gift card! Has anyone else heard of any complaints about these people? Tom Sevcik

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Near vertical ISS pass tonight for N Utah
by Wiggins Patrick 21 Apr '14

21 Apr '14

This from CalSky. patrick Appears 21h46m13s 3.3mag az:305.6° NW horizon Culmination 21h51m41s -4.1mag az:217.7° SW h:82.9° distance: 423.9km height above Earth: 422.1km elevation of Sun: -17° Disappears 21h52m25s -4.0mag az:137.0° SE h:51.4°

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Cheap GoTo mount
by Chuck Hards 21 Apr '14

21 Apr '14

I bought two of these on eBay, one for a friend. Both checked-out perfectly. No tripod or power supply, but those can easily be cobbled-together if you don't have them on hand already. The price is pretty good! They appear to be factory reconditioned units. Some minor cosmetic issues, but the two examples I bought work great. http://www.ebay.com/itm/151226438621?ssPageName=STRK:MEWNX:IT&_trksid=p3984… My friend is putting an 80mm f/5 refractor on his, I'll be using mine for a variety of small scopes and the PST.

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Shaking = spoiled image
by Wiggins Patrick 20 Apr '14

20 Apr '14

Anyone here feel any shaking a couple of minutes ago? Shook the house pretty good and messed up the image I was taking at the moment. patrick

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Free books
by Wiggins Patrick 20 Apr '14

20 Apr '14

Anyone want any of these old books? They can be picked up at most SLAS functions. patrick Rocket Island - Theodore Taylor Stars and Nebulas - William Kaufmann Astrophotography Basics - Eastman Kodak (2 copies) Saturn abd Beyond - Isaac Asimov Observe Comets - Stephen Edberg CCD Imaging - Software Bisque Exploring the Universe - Protheroe / Capriotti / Newsom Realm of the Universe - George Abell Exploration of the Universe - George Abell

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Moved
by Mark Shelton 19 Apr '14

19 Apr '14

Hi all, Just to let you know. I moved to toquerville, ut. Today Nice dark sky's and country living. Will not miss the snow etc. Mark & Sallie Shelton Sent from my iPhone

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Re: [Utah-astronomy] Moved
by Joe Bauman 19 Apr '14

19 Apr '14

Congratulations, Mark and Sallie! Post some night sky pics when you can. ------------------------------ On Sat, Apr 19, 2014 8:48 PM MDT Hutchings, Mat wrote: >Very cool Mark! You'll love it down there. > >Mat > >-----Original Message----- >From: utah-astronomy-bounces(a)mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Mark Shelton >Sent: Saturday, April 19, 2014 6:20 PM >To: Utah Astronomy >Subject: [Utah-astronomy] Moved > >Hi all, >Just to let you know. I moved to toquerville, ut. Today > >Nice dark sky's and country living. >Will not miss the snow etc. > >Mark & Sallie Shelton >Sent from my iPhone > >_______________________________________________ >Utah-Astronomy mailing list >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy > >Send messages to the list to >Utah-Astronomy(a)mailman.xmission.com > >The Utah-Astronomy mailing list is not affiliated with any astronomy club. > >To unsubscribe go to: >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy >Then enter your email address in the space provided and click on "Unsubscribe or edit options". > >This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation > >_______________________________________________ >Utah-Astronomy mailing list >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy > >Send messages to the list to >Utah-Astronomy(a)mailman.xmission.com > >The Utah-Astronomy mailing list is not affiliated with any astronomy club. > >To unsubscribe go to: >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy >Then enter your email address in the space provided and click on "Unsubscribe or edit options".

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SLAS Internships Available
by Ann House 18 Apr '14

18 Apr '14

Spread the news that SLAS is offering two internships to youth at least 15 yrs old. Take a look at the description and application in the attachment. If you are a teacher, tell your students. Tell family, friends and neighbors. Thank you for your help in spreading the news. We are looking forward to getting young people involved in observing. -A

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Fwd: SLAS Internship PDF posted
by Ann House 18 Apr '14

18 Apr '14

Hi all, The PDF is available here: http://slas.us/slasbooks/SLASINTERN.PDF Cheers, patrick

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