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Optical Engineering

An Alignment Technique for Compound Reflecting Telescopes
Author(s): J. B. Houston, Jr.; Bruce H. Walker; David W. Dodgen
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Paper Abstract

The utilization of optical alignment instrumentation in the assembly of certain large telescopes provides a convenient means for installing and calibrating these massive systems in the observatory. An experiment was performed during the factory acceptance test of a 1.22 m (48 in.) aperture Cassegrain to determine the accuracy which might be realized in practice. Scatterplate-interferometry and Hartmann tests were used with a 1.24 m (49 in.) optical flat to quantify laboratory performance. The results were impressive. The telescope alignment not only met the one-quarter wavelength peak-to-peak specification but also demonstrated that this type of calibration procedure can be performed on site, requiring a minimum of time, equipment and operator experience.

Paper Details

Date Published: 1 October 1973
PDF: -160 pages
Opt. Eng. 12(5) 125161 doi: 10.1117/12.7971653
Published in: Optical Engineering Volume 12, Issue 5
Show Author Affiliations
J. B. Houston, Jr., Kollmorgen Corporation (United States)
Bruce H. Walker, Kollmorgen Corporation (United States)
David W. Dodgen, The Perkin-Elmer Corporation (United States)

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