SH2-274 Medusa Planetary Nebula
Copyright © 2012
SH2-274 the Medusa Planetary Nebula in the constellation Gemini
This is a narrowband image using the SHO Hubble palette where SII is red, Ha is green, and OIII is blue.
Distance: 1500 light years
Camera: SBIG ST-10XME
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: 43 subexposures of 15 minutes each with 15 of SII in red, 14 of Ha in green, and 14 of OIII in blue for a total of 10 hours & 45 minutes.
Date: April 2012
Software: Camera, mount, and guider control - CCD Commander & MaximDL; calibration, stacking, & RGB creation in CCDStack, and further processing in Photoshop CS5.