Low-light-level charge-coupled device imaging in astronomy

Details Low-light-level charge-coupled device imaging in astronomy Low-light-level charge-coupled device imaging in astronomy

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986josaa...3.2131t&link_type=abstract

Optical Society of America, Journal, A: Optics and Image Science (ISSN 0740-3232), vol. 3, Dec. 1986, p. 2131-2138.

Physics

Optics

30

Astronomical Photometry, Charge Coupled Devices, Faint Objects, Imaging Techniques, Data Reduction, Image Processing, Isophotes, Pattern Recognition, Software Tools

Scientific paper

Telescope focal plane CCDs have allowed the study of objects up to 10 times more faint than those possible with photographic and video camera techniques due both to their high quantum efficiency and the photometric stability inherent to CCDs. Chopping techniques, taking advantage of this stability, permit cancellation of low level systematics to the point where faint galaxies and stars of 27-V magnitude are detected in 2-hr integration on a 4-m telescope; this corresponds to 0.02 (photons/sec)/pixel. Automated image preprocessing and pattern recognition at high data rates allow statistical studies to be made of multispectral CCD data.

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