SH2-231 Nebula in Narrowband
Copyright 2012
Larry Phillips
SH2-231 emission nebula in the constellation Auriga

The narrowband palette used was the CFHT Palette with Ha in red, OIII in green, & SII in blue.

Distance: N/A
Size: N/A
Camera: SBIG ST-10XME
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: 108 subexposures of 15 minutes each with 45 of Ha in red, 27 of OIII in green, and 36 of SII in blue for a total of 27 hours.
Date: December 2011
Software: Camera, mount, and guider control - CCD Commander & MaximDL; calibration, stacking, & RGB creation in CCDStack, and further processing in Photoshop CS5.