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C23 Edge on spiral

Caldwell 23 (NGC 891) Edge on spiral galaxy

NGC 891 is an edge on spiral galaxy in Andromeda. It has a visual magnitude 10.1 and is at a distance of 10 million light years. The relative dimensions of this galaxy are thought to be typical for a spiral galaxy. Note the dust lane runing along the equator and how thin the disk is.

The secondary mirror started to dew up about half way through the exposure.

 CCD Camera SBig 2000 xme
 Telescope 250mm F4.8 Newtonian Reflector with MPCC coma corrector
 Mount Losmandy G11

 Date 29th August 2006
 Exposure 7x300s Luminance
 Software IRIS