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M95 & M96 (Spiral Galaxies)

Image Details:

Camera: Canon Digital Rebel (300D)
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: 33 x 4min @ ISO 800
Total Exposure: 2hrs, 12min
Date: 4/13/2005 10:20:25 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

Processing:

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

Image Description:

This is M95 (right) and M96 (left), a barred spiral and a "mixed shape" spiral galaxy, respectively, in the constellation of Leo. The moon washed out this exposure a bit, and the (lack of) transparency did the rest. Not too bad, though, considering the conditions. This is a 2/3's crop of the full-size frame, shrunk for display on the web. North is up.