Thread: Crop Circles and band in image
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Old 03-01-2011, 06:50 PM
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pmrid (Peter)
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Join Date: May 2008
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In "The New CCD Astronomy" at Ch 6 (p. 239) it is suggested that the larger artifacts are probably from dust on the face of the camera, or on filters in front of the camera. An image is provided to illustrate.
Hope this helps.
Peter
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