Jim Aldrich
7/26/2014 8:46:51 PM
This false color image of the Crescent Nebula (NGC6888) was taken through narrow band filters to reveal the light elements within. The ionized gases are energized by WR 136, a Wolf-Rayet star located near the center of the nebula. This nearby but faint emission nebula is in the constellation Cygnus at a distance of about 5000 ly.
Red is mapped to hydrogen alpha (Ha), blue to double ionized oxygen (OIII), & green to ionized sulfur (SII). 30 - 20min sub-exposures were combined to compose the photo.
Journey's End Observatory
Planewave CDK-17
Paramount ME-II
SBIG STXL-11002M Camera
SBIG STXL-FW8G Guided Filter Wheel
AO-X Adaptive Optics
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