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Proceedings Paper

Large optical lenses for use in astronomical survey telescopes
Author(s): Eli Ettedgui-Atad; David M. Henry; Peter R. Hastings
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Paper Abstract

The new wide-field infrared camera (WFCAM) for the 3.8 m United Kingdom Infrared Telescope (UKIRT) and the Visible and Infrared Survey Telescope for Astronomy (VISTA) are two future facilities to provide sky survey data to complement the latest 8 m-class telescopes. Both use large lenses (with a diameter greater than 500 mm) made of fused silica. The cryostat window used for the IR channel in VISTA is 950 mm in diameter. The specification and cryogenic mounting of these components, some of which with aspherical surfaces, are an opto-mechanical challenge and are described in this paper. We also discuss various aspects of the manufacturing and testing.

Paper Details

Date Published: 5 February 2002
PDF: 7 pages
Proc. SPIE 4411, Large Lenses and Prisms, (5 February 2002); doi: 10.1117/12.454895
Show Author Affiliations
Eli Ettedgui-Atad, Royal Observatory Edinburgh (United Kingdom)
David M. Henry, Royal Observatory Edinburgh (United Kingdom)
Peter R. Hastings, Royal Observatory Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 4411:
Large Lenses and Prisms
Richard G. Bingham; David D. Walker, Editor(s)

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