

![]()
![]()
The image above is a 1/4 resolution view, 1002 x 668 pixels ~ 0.2 MB.
Click here for a 1/2 resolution view, 2004 x 1336 pixels ~ 1.5 MB.
Click here for a full resolution view, 4008 x 2672 pixels ~ 6 MB.
Image Information:
Date(s) September 1, 2006 Optics Takahashi BRC-250 10 inch f/5 Ritchey-Chrétien astrograph with a 1,268 mm focal length Mount Losmandy G-11 with Gemini Level 3 V 1.1 Camera SBIG STL-11000M on loan from CSU Fresno Physics Department (thanks to Fred Ringwald) Guiding Internal selfguiding, no dithering Field Scale 1.45 arc seconds / pixel FOV 96 x 67 arc minutes Camera Cooling -15 C Regulated Thermoelectric Filter(s) 10nm Ha filter by Custom Scientific Location Shaver Lake, California at 5610 feet. Exposure(s) Ha = 10 x 600 seconds (1.6 hours total) Binning Ha = 1x1 Camera control MaxIm DL 4 V 4.53 Processing software MaxIm DL 4 V 4.53, Photoshop CS2 V 9.0 Image notes This extensive nebular region is near Gamma Cygni. Processed images were fully calibrated, aligned, sigma clip combined and unsharp-masked.
hit counters