NGC 7640 is a magnitude 10.9, barred-spiral galaxy located in the constellation Andromeda.

ABOUT THE IMAGE

DATE/TIME:  The evenings of August 28th and 30th, 2013.

CAMERA:  Canon XSI, 450Da

TELESCOPE:  Celestron C9.25 SCT @ F/6.3

MOUNT:  Celestron CGE Pro

ISO SETTING:  800

EXPOSURES:  48

EXPOSURE LENGTH:  600sec.

TOTAL EXPOSURE LENGTH:  8hrs.

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

CAPTURE SOFTWARE:  MaximDL

STACKING SOFTWARE:  Deep Sky Stacker

PROCESSING:  Photoshop CS3

ABOUT THE IMAGE

DATE/TIME:  The evening of July 22nd, 2012.

CAMERA:  Canon XSI, 450Da

TELESCOPE:  Celestron C9.25 SCT @ F/6.3

MOUNT:  Celestron CGE Pro.

ISO SETTING:  800

EXPOSURES:  24

EXPOSURE LENGTH:  300sec.

TOTAL EXPOSURE LENGTH:  2hrs.

SUBTRACTIONS:  14 darkframes, 10 bias frames

CAPTURE SOFTWARE:  MaximDL

STACKING SOFTWARE:  Deep Sky Stacker

PROCESSING:  Photoshop CS3