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Proceedings Paper

Structural analysis and modifications to the V. M. Blanco telescope for dark energy camera (DECam) installation
Author(s): P. Schurter; A. Montané; R. Tighe; Timothy M. C. Abbott; F. Muñoz; Douglas Neill
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Paper Abstract

To substantially upgrade the Blanco telescope a new Dark Energy Camera (DECam)5 was developed. The Blanco telescope was commissioned in 1974 before the benefits of modern heavy instruments were foreseen. Consequently, the mass of DECam is greater than the original instrument payload. DECam was installed on the Blanco in 20121, 2. The telescope mount was rebalanced about the declination assembly by redesigning the Cassegrain cage to accommodate a significant increase in balancing mass. Finite element analysis was used to both determine the structural integrity of the new telescope configuration and to predict the effects of this added mass on the relative displacement between the primary and secondary mirrors. The counterweight system is described.

Paper Details

Date Published: 22 July 2014
PDF: 7 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91455G (22 July 2014); doi: 10.1117/12.2057717
Show Author Affiliations
P. Schurter, Cerro Tololo Inter-American Observatory (Chile)
A. Montané, Cerro Tololo Inter-American Observatory (Chile)
R. Tighe, Cerro Tololo Inter-American Observatory (Chile)
Timothy M. C. Abbott, Cerro Tololo Inter-American Observatory (Chile)
F. Muñoz, Cerro Tololo Inter-American Observatory (Chile)
Douglas Neill, National Optical Astronomy Observatory (United States)


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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