Derby and District Astronomical Society

Coma Berenices

Berenice's Hair

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Chris Newsome took the following picture of Coma Berenices around 06:30 UT on the 7th December 2005, just before morning twilight made imaging impossible. The most striking feature of Coma Berenices is the large loose open cluster Mel 111, named after the astronomer J P Melotte, who catalogued it in 1915. Chris used a Canon EOS300D camera with a 55-205mm lens set at 60mm (f/5.6) with a Skyglow filter attached. The camera was piggybacked on a driven Celestron C6-N. The image is comprised of three 180 second exposures at 1600ASA which were stacked and dark subtracted in MaximDL. The final image was processed in Photoshop CS2 using GradientXTerminator, Curves, RGB Levels and a Gaussian Blur.

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