Site and content copyright Robert Allevo 2002-2010
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M101 |
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PINWHEEL GALAXY in URSA MAJOR Click on IMAGE for 1400x956 resolution |
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Technical Details |
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| Optics | 12.5" RCOS operating at f/6.5 (2063mm) |
| Mount | Paramount ME |
| Camera | SBIG ST-10XME, CFW8-A |
| Filters | Tru Balance LRGB. |
| Date | June 11, 2008 |
| Exposure | LRGB = 180:30:30:305 minutes |
| Processing | MaximDl, Photoshop CS |
| Guiding | ST-402 - Sky90 |
| Binning | Lum - 1x1, RGB - 2x2 |
| Location | My back yard observatory in East Hartland, Ct. |
| Notes |
M101 is about 27 million light-years distant and it's diameter is about 170,000 light-years. The entire disk cannot be seen in this image. |