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Crescent Nebula in Emission-Line
NGC6888
Object
Type Supernova Remnant
Constellation Cygnus
Distance 5,000 ly
More Info
Image
Date 17 May 2008 (Spring)
Place Carlsbad, CA
Exposure Data Ha 180 mins @ -15C
Ha 12x15 (bin 1x1)
Notes
Equipment
Optics Vixen VC200L Corrected Reflector
Focal Length 1280mm @f/6.4
Mount Astro-Physics 900GTO
Camera SBIG ST-2000XM
Focuser Robo-Focus
Filters CFW10A, Astrodon 6nm Ha
Software CCD Commander, MaxIm DL 4, CCDStack, Photoshop cs3

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