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Comet C/2012 A2 Linear

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19/01/2012 - 10:51
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Comet C/2012 A2 Linear

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19/01/2012 - 10:51
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Attached is a stack of 45 x 20 second exposures (total 15 minutes exposure), taken unbinned with the f/6 0.4-m Schmidt-Cass which gives a scale of 1.1"/pixel. I have doubled the size of the original and cropped the field down to 2.5 x 2.5 arcmin. At the time it was moving at 0.9 arcsec/min in p.a. 352 (almost due North) and showed a very slight glow to the SW (lower right) in several different sets of images. The measured diameter of the comet was about 1.5x the size of nearby stars of similar brightness
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Comet 78/P Gehrels

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Time of observation
17/01/2012 - 19:55
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2012 Jan 16 19:37:38-20:07:06 UT Canon EOS 5DMkII ISO6400 44x32s SkyWatcher 254mm Newtonian @1200mm f/4.8 HEQ5 equatorial mount, driven but not guided From Rookhope 54.8N 2.1W 330m asl. Bortle 3 Processed by GRIP (www.grelf.net)
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Comet C/2010 G2 Hill

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17/01/2012 - 19:51
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2012 Jan 16 18:30:47-19:01:43 UT Canon EOS 5DMkII ISO6400 35x32s SkyWatcher 254mm Newtonian @1200mm f/4.8 HEQ5 equatorial mount, driven but not guided From Rookhope 54.8N 2.1W 330m asl. Bortle 3 Processed by GRIP (www.grelf.net)
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Comet C/2009 G2 Hill

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Time of observation
17/01/2012 - 17:10
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Comet C/2010 S1 Linear

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Time of observation
17/01/2012 - 16:31
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Comet C/2009 F4 McNaught

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Time of observation
17/01/2012 - 16:27
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Comet 29/P Schwassmann-Wachmann

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Time of observation
17/01/2012 - 16:25
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Comet 49/P Arend-Rigaux

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Time of observation
17/01/2012 - 16:21
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Comet 244/P Scotti

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Time of observation
17/01/2012 - 16:20
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