M109 - Dramatic Barred Spiral Galaxy |
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Description:
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Big, bright, beautiful barred spiral in Ursa Major |
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Telescope/Mount:
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Takahashi FC100 4" f/8 refractor on a Losmandy GM200 mount |
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Camera and Control Software:
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Starlight Xpress HX916 unbinned (1.733 arc-secs per pixel); Maxim DL-CCD 3.05 |
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Exposure:
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11x5mins |
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Calibration:
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Dark subtraction and flat-fielded |
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Processing:
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Processing done by Ray Gralak, imager and processor par excellence. Thanks, Ray! |
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Guiding:
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ST4 and Orion Apex 90 Mak-Cass |
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Date and Location:
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14-Apr-02 around 1:00am in the morning from Ventana Wilderness Expeditions campground in the mountains above Carmel Valley, CA (near Chew's Ridge) |
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Seeing, Transparency and Conditions:
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Conditions were outstanding. This is a dark site and the seeing varied from very good to excellent. Wind ranged from dead calm to a slight breeze. Temps ranged from the mid-forties to the mid-fifties. |
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Comments:
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Several other galaxies are visible in this field, see if you can identify them. |