Calibration of UV imagers

Details Calibration of UV imagers Calibration of UV imagers

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1158..330c&link_type=abstract

IN: Ultraviolet technology III; Proceedings of the Meeting, San Diego, CA, Aug. 10, 11, 1989 (A90-43258 19-35). Bellingham, WA,

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Calibrating, Image Processing, Ultraviolet Photometry, Algorithms, Stellar Spectrophotometry, Visible Spectrum

Scientific paper

Image systems for UV and visible wavelengths that are based on the RS170 CCV video camera are presently calibrated by means of the digital photometry of point-like images, where the algorithm used for photometry integrates the total net brightness signal over the image area. Algorithm response is linear with respect to brightness over a dynamic range of at least 3000:1. A threshold is determined on the basis of image noise statistics, in order to separate the signal from its noisy background. The same thresholding techniques could be applicable to extended source images whenever a dark-background noise level is available.

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