Charge-coupled device image detector for Schmidt telescopes

Details Charge-coupled device image detector for Schmidt telescopes Charge-coupled device image detector for Schmidt telescopes

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990rsci...61.1839n&link_type=abstract

Review of Scientific Instruments (ISSN 0034-6748), vol. 61, July 1990, p. 1839-1843.

Astronomy and Astrophysics

Astronomy

5

Charge Coupled Devices, Imaging Techniques, Schmidt Telescopes, Astronomical Observatories, Cooling Systems, Cryostats, Liquid Nitrogen, Signal To Noise Ratios, Ubv Spectra

Scientific paper

The application of a charge-coupled device sensor at the focal plane of a Schmidt telescope is described. The device installed on the 60/90/180 cm Schmidt telescope has a field of view of 17 x 25 arcmin. A special LN2 cooling system was installed inside the telescope without any modification to the plate holder itself. Tests of the instrument show it is a powerful tool in studying large angular objects like nearby galaxies, globular clusters, and clusters of galaxies. Sensitivity is high enough to reach the 21.8th magnitude V with a signal-to-noise ratio of 1.5 in 40 min of exposure.

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