Messier 53 (also known as M53, or NGC 5024) is a globular cluster in the Coma Berenices constellation. It was discovered by Johann Elert Bode in 1775. M53 is one of the more outlying globular clusters, being about 60,000 light-years away from the Galactic Center, and almost the same distance (about 58,000 light-years) from the Solar system.  Also named the Maurice Pullen star.

http://en.wikipedia.org/wiki/Messier_53

ABOUT THE IMAGE

DATE/TIME:  The evening of April 12th, 2010.

CAMERA:  Canon XSI, 450D

TELESCOPE:  Orion 100mm ED refractor @ F/18

ISO SETTING:  800

EXPOSURES:  44

EXPOSURE LENGTH:  200sec.

TOTAL EXPOSURE LENGTH:  2hrs. 26min.

SUBTRACTIONS:  20 darkframes, 10 bias frames

CAPTURE SOFTWARE:  MaximDL

STACKING SOFTWARE:  Deep Sky Stacker

PROCESSING:  Photoshop CS3