Pac Man Nebula, NGC 281 in Hubble Palette
Copyright © 2011
NGC 281, Pac Man Nebula, an emission nebula in the constellation Cassiopeia
Distance: 9500 light years.
Camera: SBIG ST-2000XM
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: Using the narrowband Hubble color palette 82 sub images @ 15 minutes each of 10 Ha, 27 OIII, & 28 SII plus 17 Ha at 20 minutes for a total exposure time of 21 hours & 55 minutes.
Date: Between September 21 & October 7, 2008
Software: Camera, mount, and guider control - CCD Commander & MaximDL, calibration and stacking - CCDStack, further processing in Photoshop CS4.