SaratogaSkies Jim Solomon's Astropics


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IC 1318 (γ Cygni Widefield)

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Image Details:

Camera: Mofidied Canon Rebel XT (350D): Hutech Type I Filter Replacement
Mount: Celestron AS-GT
Scope: Canon EF 200mm f/2.8L II USM lens
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 200mm
Effective Focal Ratio: f/2.8
Exposure: 30 x 4min @ ISO 200
Total Exposure: 2hrs, 0min
Date: 9/4/2005 10:34:49 PM PDT (start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: Manual
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow


  • IRIS: Dark subtraction, registration, gradient removal
  • JimP: Flat field, Kappa-Sigma Stacking, White balance, ASINH stretching
  • Photoshop: Levels, cropping, JPG conversion

Image Description:

This is a widefield shot of the γ Cygni (aka, Sadr) region in the constellation of Cygnus. I blew the focus on this, but the shot isn't too bad nonetheless. Of course, it's hard to tell that the focus is blown at the image scale displayed herein. <grin> A higher resolution image of this widefield shot is also available, as is a closeup of the immediate Sadr Region from last year. North is right.