SH2-185 "Jumping Frog" Nebula in Narrowband
Copyright © 2012
SH2-185 emission nebula in the constellation Cassiopeia
Also known as IC 59. I named this the Jumping Frog nebula for the appearance of outstretched legs to the right of center and also for the color palette used that gave it the green appearance. The narrowband palette used was the Hubble Palette. The stars were colored using separate RGB images.
Camera: SBIG ST-10XME
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: 100 subexposures of 10 minutes each with 33 of Ha in green, 33 of OIII in blue, and 34 of SII in red for a total of 16 hours and 40 minutes. RGB stars totaled 7 hours & 5 minutes from 85 5 minute images.
Date: November 2011
Software: Camera, mount, and guider control - CCD Commander & MaximDL; calibration, stacking, & RGB creation in CCDStack, and further processing in Photoshop CS4.