M101
Pinwheel Galaxy

M101, The Pinwheel Galaxy
Other names: NGC5457
Optics: Takahashi TOA-130F at f/7.5
Mount: Mountain Instruments MI-250 w/Gemini on ATS pier
Camera: Canon 20D [ Hutech Type I ]
Exposure: 40 minutes [ 20 x 2 minutes ] at ISO 1600
Accessories: Takahashi 35mm Flattener | Autoguided with piggybacked SV80S and DSI Pro
Location: Landers, CA [ GMARS ]
Date March 10, 2007
Notes: Processing: Image acquisition, dark frame reduction, align, and combine with ImagesPlus v2.8. Levels, curves, and unsharp mask in Photoshop.

M101 is a 7.5 magnitude galaxy in Ursa Major.

Taken under breezy conditions, moderate to poor seeing.

Click the image for a larger version (1800 x 1200, ~2.0 MB).