Crab Nebula (M1) shot with five different methods

Posted by Richard Crisp
on Sunday, May 9, 2010

by Richard Crisp

This is an image of the Crab Nebula taken using five different methods. Starting at upper left: LRGB, Emission line (Sulfur, Hydrogen, Oxygen), Stokes Polarigram, Polarigram and (center) composite Stokes Polarigram and emission line.

Shot using home built 18" f/12.6 classical cassegrain at f/7.3 (F=3366mm), FLI CM10XME camera, Custom Scientific emission line filters, Optec RGB filters and Edmund Scientific Linear polarizing filters

Total exposure time was 5 hours

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