NGC6888, Caldwell 27 - The Crescent Nebula
Digital

ngc6888digitalpm.jpg (66647 bytes)
NGC6888, Caldwell 27
Constellation: Cygnus (The Swan)
Type: Diffuse Nebula
Position: RA 20h12m00s
Dec +38d21m
Magnitude: NA
Exposure: Taken 10-9-04
9 X 600 sec. ISO 400. 51 degrees.
Equipment: Meade 10" LX-50 f/5.5
Lumicon focal reducer
Hutech modified Canon Digital Rebel (300D)
IDAS LPS filter
Losmandy G-11 Gemini mount
SBIG ST-4 autoguider
Celestron Guidescope
Processing: Raw images converted to 16bit TIFs, dark subtracted and stacked (min/max excluded average) in ImagesPlus.
Levels and curves adjusted in Photoshop.
Notes: The stellar wind from the central star is blowing a cosmic bubble in the surrounding
stellar medium. 
I also have a  wide-field image and a  film version.

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


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