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M81 & M82 (Galaxies)
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| Mouse-over to see annotations. (Requires Javascript) Click to see high-res version. |
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: 47 x 4min @ ISO 400
- Total Exposure: 3hrs, 8min
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- Date: 4/5/2005 9:05:31 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
- Neat Image: Noise attenuation on M82 closeup
Image Description:
This is M81 and M82, a famous pair of galaxies in Ursa Major. M81 is also known as Bode's Nebula. See also the full-resolution image. North is left.