NGC2174 emission line image

Posted by Richard Crisp
on Tuesday, July 21, 2009

by Richard Crisp

Taken on November 23 and 25, 2005 from my backyard in Castro Valley, California, a suburb in the light-polluted San Francisco bay area

The telescope used was an Astro-Physics AP180EDT f/9 used with a 0.75x telecompressor, the camera was an FLI IMG6303E. Filters used were [SII], Halpha and [OIII]. The mount is an Astro-Physics AP1200GTO.

All exposures were 30 minutes long. The total exposure was 7.5 hours: 5 x 30 minutes per filter.

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