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Proceedings Paper

Performance of the Apache Point Observatory 3.5-m telescope: II, pointing and tracking
Author(s): Russell E. Owen; Charles L. Hull; Walter A. Siegmund
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Paper Abstract

The Apache Point Observatory 3.5-m telescope, loated in the Sacramento Mountains of New Mexico at an elevation of 2.8 km, is awaiting the installation of the primary mirror. The design of this telescope includes a number of innovative features including a lightweight honeycomb borosilicate mirror, friction drives and encoding, and complete computer control to facilitate remote use. A 0.3-m telescope was attached to the telescope mount to monitor tracking and pointing performance. Currently, the telescope tracks open-loop to 0.3 arcsec rms over 10 min and points to 5 arcsec rms. Improvements to the servosystem and encoder mounting should make it possible to meet the goals of tracking to 0.2 arcsec rms and pointing to 1 arcsec rms.

Paper Details

Date Published: 1 July 1990
PDF: 3 pages
Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); doi: 10.1117/12.19254
Show Author Affiliations
Russell E. Owen, Univ. of Washington (United States)
Charles L. Hull, Univ. of Washington (United States)
Walter A. Siegmund, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 1236:
Advanced Technology Optical Telescopes IV
Lawrence D. Barr, Editor(s)

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