22 July 2014 Save our secondary: recovering a broken 1.3-m mirror
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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.
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Timothy M. C. Abbott, Timothy M. C. Abbott, Ronald G. Probst, Ronald G. Probst, Gary Poczulp, Gary Poczulp, Roberto Tighe, Roberto Tighe, Patricio Schurter, Patricio Schurter, Andrés Montané, Andrés Montané, Joseph DeVries, Joseph DeVries, Ronald C. Harris, Ronald C. Harris, Jonathan Elias, Jonathan Elias, Manuel Martinez, Manuel Martinez, Oscar Saa, Oscar Saa, } "Save our secondary: recovering a broken 1.3-m mirror", Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 914542 (22 July 2014); doi: 10.1117/12.2056636; https://doi.org/10.1117/12.2056636
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