Object: Crescent Nebula, NGC 6888
Date: June 7, 2002
Equipment: 10" SCT at F/6.3, HX916 CCD, G11 mount, ST-4 autoguider
Exposure: RRGB 60:30:30 minutes. Only one red exposure of 60 minutes was taken
Processing: Photoshop
Comments: Average seeing of 3.0". Strong rotating search lights covering the sky for the duration of the exposure from a local high-school prom celebration.
Description: The Crescent nebula is located in the constellation of Cygnus. It's about 4,000 light years away and spans the area of 15 by 10 light years. The nebula was created by its central star shedding its outer envelope at a rate of one solar mass every 10,000 years. This creates a strong stellar wind that's visible in the wave front compression at the top of the image.

Copyright 2001,02 Paul Kanevsky