NGC6888, Caldwell 27 - The Crescent Nebula

ngc6888-crescent.jpg (296969 bytes)
NGC6888, Caldwell 27
Constellation: Cygnus (The Swan)
Type: Diffuse Nebula
Position: RA 20h12m00s
Dec +38d21m
Magnitude: NA
Exposure: Composite of two images using the LRGB technique.
Both images taken on 11/20/03
Luminance: 60 minutes on hypered Tech Pan. Lumicon deepsky filter.
RGB: 45 minutes on Supra 400. Lumicon deepsky filter.
Equipment: Orion 120ST f/5 OTA on a Losmandy G-11 Gemini mount.
Guided with SBIG ST-4 on a Celestron guidescope.
Processing: Images were aligned in Registar, combined in Photoshop. 
Curves, LRBG, color balance adjusted in Photoshop.
Notes: The stellar wind from the central star is blowing a cosmic bubble in the surrounding
stellar medium.  You can also view this nebula in a wide-field image and a  closer digital image.

Locator Chart

ngc6888chart.gif (10273 bytes)
Chart copyright Steven Tuma and Dean Williams - Deepsky 2003

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