Coded mask imagers when to use them - and when not

Details Coded mask imagers when to use them - and when not Coded mask imagers when to use them - and when not

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004newar..48..205s&link_type=abstract

New Astronomy Reviews, Volume 48, Issue 1-4, p. 205-208.

Astronomy and Astrophysics

Astronomy

2

Gamma Ray Telescopes, Gamma Rays: Instruments And Techniques, Imaging Detectors In Astronomy

Scientific paper

Coded mask imagers are among a class of high energy astronomical instruments in which spatial or temporal coding, or a combination of the two, allows `multiplexing' of the detection process. In this way many `pixels' of an image can be observed and measured simultaneously. In certain circumstances this gives an advantage in signal-to-noise ratio, compared with an alternative approach in which each pixel is examined sequentially. The signal-to-noise ratio will, however, never be as good as that possible with focussing optics. The possible types of multiplexed instrument are discussed in the context of γ-ray line astrophysics and compared with instruments in which optics are used to concentrate the flux.

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