Barnard 33: Horsehead nebula

Posted by Richard Crisp
on Tuesday, July 21, 2009

by Richard Crisp

Taken on January 19 and 28, 2008 from my backyard in Castro Valley California, a light polluted suburb of the San Francisco bay area.

the telescope was the Stinger 450, an 18" f/12.6 classical cassegrain with focal reducer for a final focal length of 3366mm (f7.4). It was mounted on an Astro-Physics AP1200GTO

Camera was a Finger Lakes CM10 Maxcam (KAF3200ME sensor). All exposures were binned 2x2 resulting in an image scale of 0.84 arc-sec/pixel. Exposures were made through a hydrogen alpha filter and a Sulfur II filter. There was 2 hours of Halpha and 3H 40M of Sulfur for a total of 5H 40M



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