Crescent Nebula, NGC 6888 in Hubble Palette
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Crescent Nebula, NGC 6888, emission/reflection nebula in the constellation Cygnus in the Hubble color palette (SHO).
Distance: 5000 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 CFHT color palette with 15 min. subexposures of 27 Ha, 23 OIII, and
21 SII for a total exposure time of 17 hours & 45 minutes.
Date: June 2009
Software: Camera, mount, and guider control - CCD Commander & MaximDL, calibration and stacking - CCDStack, further processing in Photoshop CS4.