Object Information

Name: Medusa Nebula - Abell 21
Type: Planetary Nebula
Constellation: Gemini

Exposure data

Exposure: HaRGB = 360:60:60:60 minutes
Processing: MaxIm DL & Adobe Photoshop CS3
Telescope: Astro-Physics 130mm f6.3 Starfire EDF GT @ f5.0
Mount: Losmandy G11
Guiding: SBIG ST-4 via a Mini-Borg 60 refractor
Camera: SBIG ST-8E NABG w/CFW-8 filter wheel
Camera Temp: -25C
Filters: Baader 7nm Hydrogen-Alpha & Astrodon Tru-Balance RGB
Location: Cape Cod Imaging Station - Harwich, Massachusetts
Date: February 18, 19, 20, 2010
Notes: Background galaxies PGC21179, PGC21197, PGC21186 & PGC21209 are seen in the lower left of the image

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© Chris Cook 2010