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NGC 7331 (also known as Caldwell 30) is a spiral galaxy located in the constellation Pegasus.  It was discovered by William Herschel in 1784.  It is part of a small group of galaxies referred to as the 'Deer Lick Group,'   which is part of a much larger group of about 35 galaxies referred to as the 'Pegasus Spur.'

The Deer Lick group, whose nick-name was bestowed by an American amateur astronomer in honor of 'Deer Lick Gap' which is located in the mountains of North Carolina, is comprised of 10 NGC objects. NGC's 7325, 7326, 7327, 7331, 7333, 7335, 7336, 7337, 7338 and NGC7340.

http://en.wikipedia.org/wiki/NGC_7331

 

ABOUT THE IMAGE

DATE/TIME:  The evening and early morning of August 15th and 16th, 2012.

CAMERA:  Canon XSI, 450D modified

TELESCOPE:  Celestron C9.25" SCT @ F/12.6

MOUNT:  Celestron CGE Pro.

ISO SETTING:  800

EXPOSURES:  16

EXPOSURE LENGTH:  400sec.

TOTAL EXPOSURE LENGTH:  1hrs 46min 40sec.

SUBTRACTIONS: 14 dark frames and 10 bias frames.

CAPTURE: MaximDL

STACKING/PRE-PROCESSING: Deep Sky Stacker

PROCESSING: Photoshop CS3

 

 

 

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