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Proceedings Paper

Design and construction of an astrometric astrograph
Author(s): Daniel Vukobratovich; Tina M. Valente; Robert R. Shannon; Roger A. Hooker; Richard E. Sumner
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Paper Abstract

The Optical Sciences Center, University of Arizona, has designed and constructed a unique 'red corrected' astrometric astrograph objective lens for the United States Naval Observatory. A five element design, with an integral Schott OG550 filter, was developed to meet the requirement for a 2060 mm focal length, f/10 system. The lens provides a nearly zero distortion flat field of 5 by 5 degrees in the sky. A weight limit of 55 kg led to the use of a titanium lens barrel. Assembly tolerances are satisfied through the use of elastomeric subcell mounting of the individual elements, and an adjustable final element. The lens is hermetically sealed and uses a filter/dessicator system to insure the long term cleanliness of the optics.

Paper Details

Date Published: 10 December 1992
PDF: 15 pages
Proc. SPIE 1752, Current Developments in Optical Design and Optical Engineering II, (10 December 1992); doi: 10.1117/12.130737
Show Author Affiliations
Daniel Vukobratovich, Optical Sciences Ctr./Univ. of Arizona (United States)
Tina M. Valente, Optical Sciences Ctr./Univ. of Arizona (United States)
Robert R. Shannon, Optical Sciences Ctr./Univ. of Arizona (United States)
Roger A. Hooker, Optical Sciences Ctr./Univ. of Arizona (United States)
Richard E. Sumner, Optical Sciences Ctr./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 1752:
Current Developments in Optical Design and Optical Engineering II
Robert E. Fischer; Warren J. Smith, Editor(s)

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