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From: TerryMoselaol.com Date: Sun, 6 Mar 2005 18:39:54 EST Subject: Rosetta, Aurora Calendar Hi all, 1. Congrats to Michael Scully in Kerry who observed the Rosetta Spacecraft at its flyby of Earth on Friday evening. He may be the only one in Ireland who succeeded! The discussion is at http://www.irishastronomy.org/boards/viewtopic.php?t=1701&highlight= The actual images if that doesn't work are: http://www.irishastronomy.org/user_resources/files/1109977864-Ani_rosetta_sm2.gif http://www.irishastronomy.org/user_resources/files/1109978059-rosetta_still.jpg http://www.irishastronomy.org/user_resources/files/1110013944-1109978059-rosetta_still_mod2.jpg The last is the result of Dave Lillis trying to clean up the image. 2. Some of you may have bought the magnificent AURORA calendar by Fred Hirschman, with the most fantastic aurora photos I've ever seen, (ISBN: 0-7631-7160-3, www.browntrout.com) earlier this year, and now that you're on to the third month, you may have been wondering about some of the puzzling starfields in the background, and maybe wondered when the photos were taken. You see, aurorae don't always line themselves up with a particular constellation - often the field comprises unfamiliar parts of several neighbouring constellations! And then there may be a planet in the field, just to confuse you! Well, what else would one do on cloudy nights but a little astronomical detective work? Using my limited knowledge of the sky, a star atlas (Norton, of course), and Skymap Pro, I have been able to identify all the starfields, and in the cases where a planet is shown, to narrow the date when the photo was taken to within fairly narrow limits. Not as easy as you might think, when you consider retrograde motion! Some starfields were easy, some were not! Sad, I know. But I suppose one could be doing worse things on a cloudy night... But if you want to have a go yourself, don't read any further! This is what I get: Front Cover + October: Saturn + Hyades & Pleaides: date 16 Nov 2001. Inside Front Cover: Jupiter in Gemini, Procyon Centre Left, 23 November 2001 January: Saturn between Gemini & Taurus. Saturn is 2cm right of Zeta Tau. Capella & the Haedi at Top Centre, Perseus Top Right: 10 Feb 2003. February: part of Pegasus (L) & Aquarius (Bottom) & part of Cygnus (Top Right) & Delphinus Centre Right. March: Capella (Top Centre), & Pleiades cut by mountain horizon at Bottom Left Centre, & Perseus (R), Gamma And (BR), Aldebaran just above horizon at bottom. Saturn just above Aldebaran. Approximately 10 November 2001. April: Orion (L) & Hyades in Taurus at top. Saturn above left of Aldebaran. About 27 November 2001. May: Hyades (near Bottom Left), past Pleiades, Left, to Aries (top right centre) June: part of Cassiopeia, Top Left Centre, & part of Cygnus Bottom Right: Gamma and Epsilon Cygni just above horizon, Deneb above them. July: Parts of Serpens & Ophiuchus to Left. Zeta Oph just above horizon on Left. Delta & Epsilon Ser are at Bottom Left Centre, Alpha & Lambda Serpentis at Top Left Centre. August: Parts of Andromeda & Pegasus, with Alpha & Beta Cas Top Centre Right. Beta Per just above horizon, Lower Right. Alpha, Beta & Gamma Andromedae stretching from Bottom Centre to Top Left. M31 is slightly Top Left of Centre. (see below) September: Bottom of Square of Pegasus on Top Left, part of Aquarius Bottom Right. 'Circlet of Pisces' in Centre. October - as Front Cover November: Arcturus Bottom Left, Coma in Centre. Moon near Bottom Right. (Given that the photo was probably taken in Alaska in the winter half of the year, in the early 'Noughties', some real 'anoraks' among you might like to try to identify the date from the EXACT position of the Moon, which seems to be an overexposed young crescent!) December: Corona Borealis Bottom Centre, part of Hercules Left Centre, Head of Draco Top Centre, Vega at Top Left. Now that I've done all the hard work, what's the faint mystery object near the Left Centre Edge (just above the auroral band) in the August photo - and when was it taken???? P.s. Saw Mercury again this evening - 3 nights in a row! Who says our weather is always bad? Clear Skies (but try the above when its cloudy!) Terry Moseley
Last Revised: 2005 March 7th
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