M19 or Messier 19 also designated NGC 6273, is a magnitude 6.8, globular cluster located in the constellation Ophiuchus.  It was first discovered by Charles Messier on June 5th, 1764.

http://en.wikipedia.org/wiki/Messier_19

 

ABOUT THE IMAGE

DATE/TIME:  The evening and early morning of June 14th and 15th 2013.

CAMERA:  Canon XSI, 450Da

TELESCOPE:  Celestron C9.25 SCT @ F/6.3

MOUNT:  Celestron CGE Pro

ISO SETTING:  800

EXPOSURES:  38

EXPOSURE LENGTH:  200sec.

TOTAL EXPOSURE LENGTH:  2hrs, 6min, 40sec.

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

CAPTURE SOFTWARE:  MaximDL

STACKING SOFTWARE:  Deep Sky Stacker

PROCESSING:  Photoshop CS3

 

 

 

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