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Fig. 12


Examples of images classified as useful (left) and defective (right) in the chopping algorithm for HD 201078 = DT Cyg, BLb satellite, Cygnus I field, T = 38 °C. From top to bottom: nth image; (n − 1)th image; difference image; median-filtered image; final stellar masks. The masks are shown in grey, dilation limit in white, overlapping pixels in green, centroid positions with red and blue dots for the positive and the negative profile, respectively.

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