M1 - The Crab Nebula |
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Description:
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Supernova remnant in Taurus |
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Telescope/Mount:
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C9.25 @ f/6.3 on a Losmandy GM200 mount |
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Camera and Control Software:
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Starlight Xpress HX916 unbinned (0.93 arc-secs per pixel); Maxim DL-CCD 3.05 |
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Exposure:
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4x5m lum, 3x5m rgb |
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Calibration:
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Dark subtraction (but no flats, need a lightbox for the C9.25) |
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Processing:
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Maxim DL-CCD 3.05: 0.8 gamma stretch |
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Guiding:
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ST4 and 80/910 refractor guidescope |
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Date and Location:
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12-Jan-02 between 9pm-midnight at Del Valle Regional Park, Livermore, California |
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Seeing, Transparency and Conditions:
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Seeing was moderate, approx. 3.5/5, but deteriorated after 11pm. Transparency was good; limiting naked eye mag was approx. 5.5. Temperatures were in the mid 40's, with only a slight, occasional breeze. |
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Comments:
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Seeing deteriorated before I could get RGB frames, will try to get those next time out |