Object: Gamma Cygni Wide-Field
Date: 10/25/08, 8:30-10pm MST
Location: ASLC dark sky site near Upham, NM
Camera: Modified Canon 350XT using a Canon 100mm f2 lens stopped to f3.5
Exposure: 15 x 6 minutes, ISO800
Guiding: Camera was mounted side by side on a G11 mount with a TV85 refractor guided using an ST10.
Processing: Registered and stacked (Sigma Clipped Median) in ImagesPlus. Final levels, curves, and star reduction using blended minimum filter in PS. 
Comments: The Sadr region, or IC 1318, is the diffuse emission nebula surrounding Sadr or Gamma Cygni. Sadr lies in the center of Cygnus' cross. The Sadr region is one of the surrounding nebulous regions, others include the Butterfly nebula and the Crescent Nebula. It contains many dark nebulae in addition to the emission diffuse nebulae. (Comments from Wikipedia.)

© Dave Dockery 2008