Image correction in a coded mask X-ray telescope

Details Image correction in a coded mask X-ray telescope Image correction in a coded mask X-ray telescope

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..621w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 3, p. 621-628.

Astronomy and Astrophysics

Astronomy

10

Image Processing, Spaceborne Astronomy, Spacelab Payloads, X Ray Telescopes, Background Noise, Data Processing, Image Motion Compensation, Radiation Detectors

Scientific paper

A description of the analytical procedures developed for the analysis of flight data from a coded mask X-ray telescope is presented, with emphasis on aspects particularly relevant to the data processing. The procedures involve the binning of the photons into detector plane images in various time and energy ranges, the reconstruction of these to form sky images using a Hadamard Transform to perform a cyclic cross-correlation with the mask pattern, and, where necessary, the coadding of sky images obtained in different time intervals. Various necessary corrections and precautions (energy corrections, photon position corrections, detector plane image corrections, and background nonuniformity corrections) are discussed.

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