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Proceedings Paper

The VST secondary mirror support system
Author(s): P. Schipani; F. Perrotta; C. Molfese; O. Caputi; L. Ferragina; L. Marty; M. Capaccioli; D. Gallieni; P. Fumi; E. Anaclerio; P. Lazzarini; G. De Paris
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Paper Abstract

The VST telescope is equipped with an active optics system based on a wavefront sensor, a set of axial actuators to change the primary mirror shape and a secondary mirror positioner stage. The secondary mirror positioning capability allows the correction of defocus and coma optical aberrations, mainly caused by incorrect relative positions of the optics. The secondary mirror positioner is a 6-6 Stewart platform (also called "hexapod"). It is a parallel robot with a mobile platform moved by 6 linear actuators acting simultaneously. This paper describes the secondary mirror support system and the current status of the work.

Paper Details

Date Published: 23 July 2008
PDF: 10 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 701845 (23 July 2008); doi: 10.1117/12.787925
Show Author Affiliations
P. Schipani, INAF-Osservatorio Astronomico di Capodimonte (Italy)
F. Perrotta, INAF-Osservatorio Astronomico di Capodimonte (Italy)
C. Molfese, INAF-VSTCeN (Italy)
O. Caputi, INAF-VSTCeN (Italy)
L. Ferragina, INAF-VSTCeN (Italy)
L. Marty, INAF-VSTCeN (Italy)
M. Capaccioli, INAF-VSTCeN (Italy)
Univ. degli Studi Federico II (Italy)
D. Gallieni, ADS International s.r.l. (Italy)
P. Fumi, ADS International s.r.l. (Italy)
E. Anaclerio, ADS International s.r.l. (Italy)
P. Lazzarini, ADS International s.r.l. (Italy)
G. De Paris, INAF-Sede Centrale Viale del Parco Mellini (Italy)

Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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