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Ison C/2012 S1

Ison C/2012 S1
Object : Comet Ison C/2012 S1
Date : 2013-10-19
Time (UT) : 03:38 to 03:51
Mount : Skywatcher EQ6 Pro Synscan
Lens/telescope : Pentax 500mm f/4.5 (f 5.6)
Filter : none
Camera : Canon EOS 5D
Exp. time : 18x30 seconds at ISO1000
Image process tool : Fitswork, IrfanView.
Processing : align rgb, dark, bias, median stack.
Site : Sweden, Stockholm
Comment : Expectation about this comet was big, very bright and big, it failed. Almost invisible, it's the green dot left and up from center. The bright object lower right is the planet Mars.

Ison C/2012 S1
Comment : This is a crop around the comet. Even if it's weak you can clearly see the tail.
More to know : You can read more about the comet on Seiichi Yoshida's homepage: comet/catalog/ 2012S1/2012S1.html

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