Four-shooter - A large format charge-coupled device camera for the Hale telescope

Details Four-shooter - A large format charge-coupled device camera for the Hale telescope Four-shooter - A large format charge-coupled device camera for the Hale telescope

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987opten..26..779g&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 26, Aug. 1987, p. 779-787.

Physics

Optics

74

Charge Coupled Devices, Galactic Clusters, Images, Quasars, Red Shift, Telescopes, Cassegrain Optics, Field Of View, Hubble Space Telescope, Pixels

Scientific paper

The Hale telescope has employed an astronomical camera using four 800x800 CCDs in an optical arrangement that allows the imaging of a contiguous 1600-pixel-square region of the sky; reimaging optics are then used to yield a scale of 0.33 arcsec/pixel. Optical coatings are incorporated to yield a throughput at peak efficiency of nearly 50 percent, including telescope losses. This camera can be used in a scanning mode, in which the telescope tracking rate is offset and the charge is clocked in the chips in such a way that the charge image remains aligned with the optical image. Attention is given to the results of a survey for high-redshift quasars using this equipment, which has produced images for the most distant galaxy clusters yet discovered.

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