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Дата изменения: Wed Jan 10 15:01:43 2007 Дата индексирования: Tue Oct 2 04:15:07 2012 Кодировка: Поисковые слова: comet tail |
From: TerryMoselaol.com Date: Tue, 9 Jan 2007 18:24:08 EST Subject: Comet McNaught photo'd from Ireland, Lecture, Meet J Brown Hi all, 1. Comet McNaught is now really spectacular! David Moore from Dublin first spotted it several days ago, and now Martin McKenna from Maghera has both seen and imaged it. Congrats to Martin for another excellent achievement! Here's his report (slightly edited): "Hi Terry, I wish to report that after eight separate attempts to find comet Mc Naught which were hampered by clouds I finally suceeded in tracking down this exciting comet this evening (Jan 9th). I packed my ETX 90mm with 40mm 1.25" (31X) eyepiece (FOV=2 degrees), 10X50mm binoculars, camera and tripod into a rucksack and walked several hundred metres to a location which is on an elevated position providing me with a good SW horizon. The sky was 97% clear with trans = 8/10. I set up my gear and watched the sun set while ignoring the strange looks I was getting from neighbours walking by and waited. Brilliant Venus emerged out of the twilight first then at 16.40 UT I spotted Mc Naught in very bright blue twilight well placed in the SW sky approx 18 degrees west of Venus. The comet was gorgeous! I could easily see it with the naked eye including its bright high surface brightness white dust tail pointing to the NW at a 45 degree angle. Through the ETX the coma was a bright golden coloured very highly condensed object with sharp well defined edges, not too different from a planetary disk. It measured + 2' in diameter. The long dust tail was visible for 15' and a vivid pearly white colour. In the 10X50's the tail was seen for 1 degree. This comet looks very healthy and bright and I would suspect its best show is yet to come. With the naked eye it hung over the tower of Maghera police station and the security camera seemed to be pointed directly at the comet. A gorgeous object! Mag -1.5 Dia 2' DC 9 Tail= 1 degree NW. Images attached = Fuji S5600 5.1MP, ISO 100, 10X optical zoom, 1/20th sec. From a very excited Martin Mc Kenna. link." 2. A final reminder: The opening lecture of the Irish Astronomical Association's 2007 programme will be on Wed 10 January, when Prof John Brown, Astronomer Royal for Scotland, will give a public lecture entitled: "Black Holes and White Rabbits". Prof Brown is also an accomplished magician, and he really does incorporate some spectacular magic into a proper astronomical lecture! Amazingly entertaining, as well as informative! Not to be missed. 7.30 p.m., Lecture Room 5, Stranmillis College, Stranmillis Road, Belfast. Admission free, including light refreshments, and all are welcome. 3. ECLIPSES PAST & NEXT: Prof Brown has also suggested meeting up again with any of you who were lucky enough to be on our eclipse trip to Turkey, and we have arranged to meet with him & Margaret in the bar of the Wellington Park Hotel, Malone Road, Belfast, on Thursday 11th at 8 p.m. As well as the chance for a re-union, John has also, at my request, been making enquiries with his astronomical contacts at Novosibirsk University regarding a possible trip there to see the next total solar eclipse on 1/8/2008, and will have some up-to-date information to tell us. It would be a useful opportunity to discuss the options, if you are interested. If there is any change to those arrangements I will let you know by email no later than late on Wednesday evening. Please could you let me know by return if you are likely to go to that meeting, so we can estimate numbers. And please pass this on to anyone else you know who might be interested in any such trip. Clear Skies, Terry Moseley
Last Revised: 2007 January 10th
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