NGC
6888
The
Crescent Nebula
NGC
6888 - The Crescent Nebula in Cygnus
by
Bob and Janice Fera
300mm
f/4.9 Ceravolo Astrograph
SBIG
STL11000M CCD Camera
Astrodon
Filters
HaRGB
Composite - 120:75:75:75 minutes
Ha:8x20m
R:5x15m G:5x15m B:5x15m
Image
acquired with CCDAutopilot
Processed
in CCDstack and Adobe Photoshop
Taken
June 18, 20, 21, 2009 from Eagle Ridge Observatory, Foresthill,
CA
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