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.
|Location||Flint Hills of Kansas|
|Telescope||AP130 @ f6 w/field flattner|
|Camera||Canon 350D, Hutech modified type I|
|Exposure||Stack of 18, 7 minute exposures at ISO 800|
|Notes||60#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