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Proceedings Paper

Modified telescope alignment procedure for improving the beam quality of the CHARA Telescopes
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Paper Abstract

We present the procedure used to optically align the CHARA telescopes. We show that the beam quality, delivered by the CHARA telescopes E1, E2 and W2, is significantly better now than in 2008. RMS wavefront error is about 200 nm. The astigmatism observed in W1 is more likely due to a combination of a mechanical problem in the mounting and misalignment. We present wavefront quality results from four telescopes. Further beam quality improvements can be expected when the second part of the alignment procedure (tuning) will be carried out later this year.

Paper Details

Date Published: 21 July 2010
PDF: 9 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 773445 (21 July 2010); doi: 10.1117/12.857883
Show Author Affiliations
Laszlo Sturmann, Georgia State Univ. (United States)
Judit Sturmann, Georgia State Univ. (United States)
Theo A. ten Brummelaar, Georgia State Univ. (United States)
Harold A. McAlister, Georgia State Univ. (United States)

Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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