Flat-Fielding for CCDs in AAVSO Observations, I

Details Flat-Fielding for CCDs in AAVSO Observations, I Flat-Fielding for CCDs in AAVSO Observations, I

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999javso..27...49e&link_type=abstract

The Journal of the American Association of Variable Star Observers, vol. 27, no. 1, p. 49-54

Astronomy and Astrophysics

Astronomy

Scientific paper

Flat-field correction for CCD chips is necessary to correct for the relative sensitivity to light of each pixel in the array as well as non-uniformities in the focal plane of the telescope + filter combination. This has been a serious issue for AAVSO CCD observers. Each observer tends to have a different method of performing flat-fielding, and even in the professional astronomical ranks there is no agreement as to how flat-fields should be obtained. We present a simple method that can be used at any time of day or night to make an accurate flat-field for CCD observing.

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