Howard's Astronomical Adventures
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NGC 6888: Crescent nebula in Cygnus

NGC 6888, the Crescent nebula, is an expanding shell of gas being driven by a Wolf Rayet star.

Click image for larger version (1260x1087, 770kb). This was the second time I have used this target prior to Okie-Tex Star Party. Compared to last years photograph this image is deeper, with better seeing and better post processing.

Photograph Information
LocationFlint Hills of Kansas
TelescopeAP130 @ f6 w/field flattner
CameraCanon 350D, Hutech modified type I
ExposureStack of 18, 7 minute exposures at ISO 800
Notes60#176;F, 81%rh, good transparancy but ground fog developed.

Initial RAW conversion, registration and stacking in IRIS.
Noise reduction in PixInsight LE 1.02 Additional adjustments in Photoshop CS2

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