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| M101 In Ursa Major Messier 101 (also called "Pinwheel Galaxy") is 21 Million light years distance. The detail in the upper left corner of the image is the small elliptical Galaxy NGC 5477. Imaging Technique Image remotely taken using "GRAS-005" of Global Rent a Scope. Instrument: Takahashi Epsilon 250 (Aperture = 250mm; Focal Length = 850 mm, f/3.4) Camera: SBIG ST-10XME; Field of view: 55.6'x37.1' Exposure: L = 4 x 300s CLEAR Filter; 1x1 bin R = 4 x 180s; 1x1 bin G = 4 x 180s; 1x1 bin B = 4 x 180s; 1x1 bin Image size reduced to 50%, processing with CCDStack and Photoshop CS2 with GradientXTerminator Plug-in by Russell Croman. |
| Luminance Image |