M101 - The Pinwheel Galaxy
| Object | Spiral Galaxy, "The Pinwheel Galaxy" (M101), in Ursa Major | |
| Telescope (Photo) | Celestron 11" EdgeHD SCT OTA @ f/10 on Losmandy G-11 Mount | |
| Telescope (Guiding) | Orion EON 80mm ED Refractor @ f/15.625 (f/6.25 w/2.5x Powermate) on Losmandy G11 Mount | |
| Camera (Photo) | SBIG ST8300M monochrome CCD | |
| Camera (Guiding) | Starlight Express Lodestar w/ PHD Guiding | |
| Exposure Detail |
LRGB combination: Luminance: excluded-average combination of 27 images ( binned 1x1) at 600 seconds Red: excluded-average combination of 14 images (binned 2x2) at 300 seconds Green: excluded-average combination of 15 images (binned 2x2) at 300 seconds Blue: excluded-average combination of 13 images (binned 2x2) at 300 seconds RAW file conversion, full calibration (flat, dark, bias, flat-dark), and initial image processing using ImagesPlus 4.0; final image processing using Photoshop CS3 |
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| Location |
Luminance:
Private Property at
Chiefland Astronomy Village, Florida (N29.406, W82.860) RGB: Private Property, Greene County, Ohio (N39.677, W83.802) |
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| Date |
Luminance: 03/26/11 RGB: 04/30/11 |