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Crop Circles and band in image
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03-01-2011, 06:50 PM
pmrid
(Peter)
Ageing badly.
Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,681
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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