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Proceedings Paper

Palomar 200-in. f/9 Cassegrain CCD camera
Author(s): James K. McCarthy
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Paper Abstract

This article describes the design and construction of a CCD camera for the f/9 Cassegrain focus of the 200-inch (5m) Hale Telescope at Palomar Observatory. This instrument utilizes a set of 18-inch (0.45m) diameter lenses to change the Cassegrain focal ratio from f/16 to f/9, and the optical design prescription of these lenses is reported. For CCDs having 24 micrometers pixels, the f/9 focus gives a reciprocal plate scale of 9 pixels per arcsecond, which is well suited to precision photometry as well as future application to adaptive optics. In addition to the CCD and shutter, the instrument also incorporates an offset guider and an 8-position filter wheel.

Paper Details

Date Published: 1 June 1994
PDF: 9 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176736
Show Author Affiliations
James K. McCarthy, California Institute of Technology Palomar Observatory (United States)

Published in SPIE Proceedings Vol. 2198:
Instrumentation in Astronomy VIII
David L. Crawford; Eric R. Craine, Editor(s)

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