M81 (Spiral Galaxy)

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Image Details:

Camera: Canon Rebel 300D
Mount: Fornax 50
Scope: Astro-Physics 130EDT f/8
Configuration: Prime Focus
Additional Optics: Astro-Physics photographic telecompressor (0.75x)
Filter: None
Effective Focal Length: 780mm
Effective Focal Ratio: f/6
Exposure: 35 x 4 min @ ISO 800
Total Exposure: 140 min
Date: 08/01/2011 23:42:00 CET (Start)
Location: Emberger Alm, Austria
Focus: Bahtinov mask
Acquisition/Dithering/Guiding: MGen through 50/180 finder scope
Processing: IRIS, Photoshop


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