The yCas Nebula is a combination of two nebulae, IC 59 (top, center) and IC 63 (lower, left.) The star  yCas shines at a magnitude 2.15 and is the central star in the "W" shape of the constellation Cassiopeia.  

ABOUT THE IMAGE

DATE/TIME:  Taken on the evening of September 11th, 2013.

CAMERA:  Canon XSI, 450Da

TELESCOPE:  Celestron C9.25" SCT @ F/6.3

ISO SETTING:  800

EXPOSURES:  25

EXPOSURE LENGTH:  600sec.

TOTAL EXPOSURE LENGTH:  4hrs, 10min.

SUBTRACTIONS: 16 dark frames, 40 flat frames and 16 dark-flat frames.

CAPTURE: MaximDL

STACKING/PRE-PROCESSING: Deep Sky Stacker

PROCESSING: Photoshop CS3