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Proceedings Paper

The opto-mechanical alignment procedure of the VLT Survey Telescope
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Paper Abstract

The VLT Survey Telescope is a f/5.5 modified Ritchey-Chretien imaging telescope, which is being installed at the ESO-Paranal Observatory. It will provide a one square degree corrected field of view to perform surveyprojects in the wavelength range from UV to I band. In this paper we describe the opto-mechanical alignment procedure of the 2.61m primary mirror, the secondary and correctors lenses onto the mechanical structure of the telescope. The alignment procedure does not rely on the mechanical precision of the mirrors. It will be achieved using ad-hoc alignment tools, described in the paper, which allows the spatial determination of optical axes (and focuses where necessary) of the optical components with respect to the axis defined by the rotation of a laser beam mounted on the instrument bearing.

Paper Details

Date Published: 6 August 2010
PDF: 10 pages
Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 773357 (6 August 2010); doi: 10.1117/12.857267
Show Author Affiliations
Carmelo Arcidiacono, INAF - Osservatorio Astrofisico di Arcetri (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Roberto Ragazzoni, INAF - Osservatorio Astronomico di Padova (Italy)
Gabriele Umbriaco, Univ. degli Studi di Padova (Italy)
Jacopo Farinato, INAF - Osservatorio Astronomico di Padova (Italy)
Demetrio Magrin, INAF - Osservatorio Astronomico di Padova (Italy)

Published in SPIE Proceedings Vol. 7733:
Ground-based and Airborne Telescopes III
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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