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Proceedings Paper

Save our secondary: recovering a broken 1.3-m mirror
Author(s): Timothy M. C. Abbott; Ronald G. Probst; Gary Poczulp; Roberto Tighe; Patricio Schurter; Andrés Montané; Joseph DeVries; Ronald C. Harris; Jonathan Elias; Manuel Martinez; Oscar Saa
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Paper Abstract

In an inauspicious start to the ultimately very successful installation of the Dark Energy Camera on the V. M. Blanco 4- m telescope at CTIO, the light-weighted Cer-Vit 1.3-m-diameter secondary mirror suffered an accident in which it fell onto its apex. This punched out a central plug of glass and destroyed the focus and tip/tilt mechanism. However, the mirror proved fully recoverable, without degraded performance. This paper describes the efforts through which the mirror was repaired and the tip/tilt mechanism rebuilt and upgraded. The telescope re-entered full service as a Ritchey- Chrétien platform in October of 2013.

Paper Details

Date Published: 22 July 2014
PDF: 9 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 914542 (22 July 2014); doi: 10.1117/12.2056636
Show Author Affiliations
Timothy M. C. Abbott, Cerro Tololo Inter-American Observatory (Chile)
Ronald G. Probst, National Optical Astronomy Observatory (United States)
Gary Poczulp, National Optical Astronomy Observatory (United States)
Roberto Tighe, Cerro Tololo Inter-American Observatory (Chile)
Patricio Schurter, Cerro Tololo Inter-American Observatory (Chile)
Andrés Montané, Cerro Tololo Inter-American Observatory (Chile)
Joseph DeVries, National Optical Astronomy Observatory (United States)
Ronald C. Harris, National Optical Astronomy Observatory (United States)
Jonathan Elias, National Optical Astronomy Observatory (United States)
Manuel Martinez, Cerro Tololo Inter-American Observatory (Chile)
Oscar Saa, Cerro Tololo Inter-American Observatory (Chile)


Published in SPIE Proceedings Vol. 9145:
Ground-based and Airborne Telescopes V
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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