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Proceedings Paper

A new telescope control system for the Telescopio Nazionale Galileo: I – derotators
Author(s): Adriano Ghedina; Manuel Gonzalez; Hector Perez Ventura; Candido Carmona; Luis Riverol
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Paper Abstract

Telescopio Nazionale Galileo (TNG) is a 4m class active optics telescope at the observatory of Roque de Los Muchachos. In the framework of keeping optimum performances during observation and continuous reliability the telescope control system (TCS) of the TNG is going through a deep upgrade after nearly 20 years of service. The original glass encoders and bulb lamp heads are substituted with modern steel scale drums and scanning units. The obsolete electronic racks and computers for the control loops are replaced with modern and compact commercial drivers with a net improvement in the tracking error RMS. In order to minimize the impact on the number of nights lost during the mechanical and electronic changes in the TCS the new TCS is developed and tested in parallel to the existing one and three steps will be taken to achieve the full upgrade. We describe here the first step affecting the mechanical derotators at the Nasmyth foci.

Paper Details

Date Published: 22 July 2014
PDF: 8 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 914553 (22 July 2014); doi: 10.1117/12.2054632
Show Author Affiliations
Adriano Ghedina, INAF - Fundación Galileo Galilei (Spain)
Manuel Gonzalez, INAF - Fundación Galileo Galilei (Spain)
Hector Perez Ventura, INAF - Fundación Galileo Galilei (Spain)
Candido Carmona, INAF - Fundación Galileo Galilei (Spain)
Luis Riverol, INAF - Fundación Galileo Galilei (Spain)

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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