M76 Little Dumbbell Nebula in SHO NB Palette
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M76, Little Dumbbell planetary nebula in the constellation Perseus. This is a narrowband image using the SHO palette where SII is mapped to red, Ha is mapped to green, and OIII is mapped to blue.
Distance: 2500 light years
Size: 1.23 light years across
Camera: SBIG ST-10XME
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: 102 subexposures of 15 minutes each with 34 of Ha, 31 of SII, & 37 of OIII for a total time of 25 hours & 45 minutes.
Date: Oct 2013
Software: Camera, mount, and guider control - CCD Commander & MaximDL; calibration, stacking, & color creation in CCDStack, and further processing in Photoshop CS6.