#12392 Mar 17, 2005
I have been imaging 9P/Temple 1 which is brightening but the other
night it was very close to a bright star so I elected to image it's
nearest neighbor comet, 62P/Tsuchinshan 1.
62P has a relative motion of 0.5 arc seconds per minute. With my
sampling density of 2.5 arc seconds per pixel with the E160 and SXV-
H9, I was able to take 6 minute guided (on a star) subframes
without undue comet blur. 62P is about magnitude 13, a magnitude or
so dimmer than 9P, but it is also about 15 degrees higher, so less
atmospheric extinction . and skyglow, which I have lots of!
Image and supporting information at
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Igloo Observatory Home Page dpersyk.home.att.net