SaratogaSkies Jim Solomon's Astropics

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December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

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NGC 7000 & IC 5070 (North American & Pelican Nebulae Widefield)

Mouse-over to see annotations. (Requires Javascript) Click to see high-res version.

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: 46 x 4min @ ISO 800
Total Exposure: 3hrs, 4min
Date: 9/29/2005 PM 9:01:03 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

Processing:

  • 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 North American Nebula (NGC 7000, left) and the Pelican Nebula (IC 5070, right), two emission nebulae in the constellation of Cygnus. This is one of my best widefield images to date. Lots of exposure time and really nailing the focus (always a challange at f/2.8) certainly helped. Mouse over the image to see the annotations. A higher resolution image is also available. North is up.