NGC 891 commonly refered to as the "Cigar Galaxy," is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster.

http://en.wikipedia.org/wiki/NGC_891

 

ABOUT THE IMAGE

DATE/TIME:  The evenings of Oct. 1st, 5th and 9th, 2013.

CAMERA:  Canon XSI, 450Da

TELESCOPE:  Celestron C9.25 SCT @ F/6.3

ISO SETTING:  800

EXPOSURES:  120

EXPOSURE LENGTH:  300sec.

TOTAL EXPOSURE LENGTH:  10hrs.

SUBTRACTIONS:  40 darkframes, 120 flat frames and 48 dark flat frames.

CAPTURE SOFTWARE:  MaximDL

STACKING SOFTWARE:  Deep Sky Stacker

PROCESSING:  Photoshop CS3