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Proceedings Paper

Focal reducer/CCD detector system for the McDonald 2.1-m telescope
Author(s): Chet B. Opal; John A. Booth
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Paper Abstract

A focal reducer which converts the f/13.5 primary Cassegrain beam of the McDonald 2.1 m telescope to f/3.0 is described. The resulting plate scale is 30 microns/arcsec, which is a good match to the resolution of typical CCDs for seeing conditions of about 1 arcsec. The present system uses a SID501 RCA CCD with 30-micron pixels; however, a TI 800 x 800 CCD with 15-micron pixels and other low-noise, small pixel devices will be used eventually. The focal reducer uses primarily reflective optics to provide good sensitivity down to the atmospheric cutoff at 3100A.

Paper Details

Date Published: 1 July 1990
PDF: 9 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19091
Show Author Affiliations
Chet B. Opal, McDonald Observatory/Univ. of Texas, Austin (United States)
John A. Booth, McDonald Observatory/Univ. of Texas at Austin (United States)


Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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