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Comet C/2011 F1 (LINEAR)

 

 2012 Aug 22

LINEAR, the discoverer of this and many other comets, is the Lincoln Laboratory Near-Earth Asteroid Research project, an Earth-based automated sky survey. The equipment is in New Mexico, where clear skies are far less scarce than they are here in England.

I took these recent comet photos partly to verify for myself that the charts I have been generating for the BAA Computing Section are accurate. They seem to be spot on. These comets are too faint for me to see by eye through my telescope but by using my Hopper software to locate them I was able to photograph them with no difficulty.

 

Canon EOS 5D MkII ISO6400 26x64s
254mm Newtonian f=1200mm f/4.8
HEQ5 equatorial mount, driven but not guided
2012 Aug 22 22:41:36-23:12:48 UT
From Rookhope 54.8N 2.1W 330m asl. Rural, almost no light pollution (3 Bortles)

The nonuniformity of the star trails in this photo is due to the fact that wispy clouds kept coming and going, so some frames in my sequence turned out to be unuseable.

 2012 Aug 20

Canon EOS 5D MkII ISO6400 49x32s
254mm Newtonian f=1200mm f/4.8
HEQ5 equatorial mount, driven but not guided
2012 Aug 20 22:29:18-22:58:11 UT
From Rookhope 54.8N 2.1W 330m asl. Rural, almost no light pollution (3 Bortles)