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Proceedings Paper

Thermal performance and facility seeing at the upgraded 3.8-m UK Infrared Telescope (UKIRT)
Author(s): Timothy G. Hawarden; Andrew J. Adamson; Timothy C. Chuter; Nicholas P. Rees; Richard J. Massey; Charles P. Cavedoni; Eli Ettedgui-Atad
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Paper Abstract

The upgraded 3.8 m UK Infrared Telescope employs active control of the primary mirror figure and secondary mirror alignment to constrain intrinsic wavefront errors, currently to approximately 180 nm, while a fast guider controls a tip- tilt secondary to remove telescope vibrations and tracking errors. It routinely produces images with FWHM below 0.'5 at 2.2 micrometers wavelength (the K-band). The best fully-sampled image yet recorded has FWHM equals 0.'171 and is believed still to be the best ever achieved by a ground-based telescope without the use of higher-order adaptive optics.

Paper Details

Date Published: 2 August 2000
PDF: 11 pages
Proc. SPIE 4004, Telescope Structures, Enclosures, Controls, Assembly/Integration/Validation, and Commissioning, (2 August 2000); doi: 10.1117/12.393905
Show Author Affiliations
Timothy G. Hawarden, Joint Astronomy Ctr. (United Kingdom)
Andrew J. Adamson, Joint Astronomy Ctr. (United States)
Timothy C. Chuter, Joint Astronomy Ctr. (United States)
Nicholas P. Rees, Joint Astronomy Ctr. (United States)
Richard J. Massey, Joint Astronomy Ctr. (United States)
Charles P. Cavedoni, Gemini Observatory (United States)
Eli Ettedgui-Atad, Royal Observatory Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 4004:
Telescope Structures, Enclosures, Controls, Assembly/Integration/Validation, and Commissioning
Thomas A. Sebring; Torben Andersen, Editor(s)

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