Automatic Removal of Fringes from EFOSC Images
نویسندگان
چکیده
The Messenger 152 – June 2013 sky-emission fringes and cannot be used for correcting the fringe patterns. There fore, fringes are not removed by the standard dataprocessing techniques (bias subtraction, bad pixel masking, and flat-fielding). Fringe removal requires an extra step, where a description of the fringe pattern is scaled and subtracted from each image. This has traditionally been a rather labour-intensive step, typically requiring careful manual adjust ments for each science image, as the intensity of the fringes is highly variable, depending on atmospheric conditions.
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