SaratogaSkies Jim Solomon's Astropics


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M16 (Eagle Nebula)

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Image Details:

Camera: Mofidied Canon Rebel XT (350D): Hutech Type I Filter Replacement
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: Celestron/Baader Multi Purpose Coma Corrector (MPCC)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 28 x 4min @ ISO 400
Total Exposure: 1hrs, 52min
Date: 8/28/2005 9:01:59 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
  • JimP: Flat field, Kappa-Sigma Stacking, White balance, ASINH stretching
  • Photoshop: Levels, sharpening, cropping, JPG conversion

Image Description:

This is a "do over" of M16, the Eagle Nebula, in the constellation of Serpens. M16 (NGC 6611) actually refers to the open cluster of bright, white, stars just above and to the right of the center of this photo. IC 4703 is the catalog name given to the nebula in which these bright, young stars continue to be born. The Modified camera did an excellent job at capturing the Hα (deep red) color in the nebula, while not obscuring the greenish tones in the upper-right regions. My previous attempt at M16 is still available, that one with an unmodified camera. This is the full frame, shrunk for display on the web. A full-resolution image is also availble. North is up.