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Proceedings Paper

LSST reflective coating studies
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Paper Abstract

The Large Synoptic Survey Telescope (LSST) baseline design includes aluminum coating for the large mirrors in its 3 element modified Paul Baker optical design. The 8.4 meter diameter of the primary provides a significant challenge to the LSST coating plans however such coatings have successfully achieved for this size aperture. LSST also recognizes that the use of mirror coatings with higher reflectivity and durability would significantly benefit its science by increasing its overall throughput and improving its operational efficiency. LSST has identified Lawrence Livermore National Laboratory (LLNL) blue-shifted protected silver coating as a possible candidate to provide this blue wavelength performance. A study has been started to assess the performance of these and other coatings in the observatory environment. We present the details of this ongoing program, the results obtained so far, and related coating tests results. LSST has also engaged in collaboration with the Gemini Telescope in the development and testing of an Al-Ag coating based on their current recipe. The first results of these tests are also included in this report.

Paper Details

Date Published: 6 July 2006
PDF: 9 pages
Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62730X (6 July 2006); doi: 10.1117/12.670611
Show Author Affiliations
Jacques Sebag, National Optical Astronomical Observatory (United States)
Victor Krabbendam, National Optical Astronomical Observatory (United States)
Gary Poczulp, National Optical Astronomical Observatory (United States)
Douglas Neill, National Optical Astronomical Observatory (United States)
Tomislav Vucina, Gemini Observatory (Chile)
Maxime Boccas, Gemini Observatory (Chile)

Published in SPIE Proceedings Vol. 6273:
Optomechanical Technologies for Astronomy
Eli Atad-Ettedgui; Joseph Antebi; Dietrich Lemke, Editor(s)

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