M70 also known as Messier 70 or NGC 6681, is a globular cluster which is located approximately 29,300 light-years distant in the constellation Sagittarius.  It was discovered by Charles Messier in 1780 and was included in his catalog of comet-like objects.

http://en.wikipedia.org/wiki/Messier_70

 

ABOUT THE IMAGE

DATE/TIME:  The evening of August 24th, 2013.

CAMERA:  Canon XSI, 450Da

TELESCOPE:  Celestron C9.25 SCT @ F/6.3

MOUNT:  Celestron CGE Pro

ISO SETTING:  800

EXPOSURES:  27

EXPOSURE LENGTH:  200sec.

TOTAL EXPOSURE LENGTH:  1hrs, 30min.

SUBTRACTIONS:  16 darkframes, 40flat frames, 16darkflat frames

CAPTURE SOFTWARE:  MaximDL

STACKING SOFTWARE:  Deep Sky Stacker

PROCESSING:  Photoshop CS3

 

 

 

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