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Proceedings Paper

The CFHT MegaCam filter, shutter and roll pitch mechanisms.
Author(s): Stephan Aune; Olivier Boulade; Xavier Charlot; P. Abbon; Pierre Borgeaud; Pierre-Henri Carton; M. Carty; J. Da Costa; D. Desforge; H. Deschamps; Dominique Eppelle; Pascal Gallais; L. Gosset; Remy Granelli; Michel Gros; Jean de Kat; Denis Loiseau; J. L. Ritou; Jean Yves Rousse; Pierre Starzynski; Nicolas Vignal; Laurent G. Vigroux
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Paper Abstract

MegaCam is an imaging CCD camera with a 1 square degree field of view for the new MegaPrime prime focus of the 3.6 meter Canada-France-Hawaii Telescope. This CCD camera is fixed on an aluminum structure, called Camembert for its shape, housing a shutter, a filter system and a roll pitch system to tune the CCD mosaic plane. The shutter is made with 1 meter diameter honeycomb half disks that rotates to covers or exposes the CCD mosaic. On this shutter a calibration source is fixed to monitor the CCD and its electronics. The filter system is made of a jukebox with a capacity of eight 30 cm square filters and of a loading arm to place them under the field of view. The instrument was delivered to the CFHT observatory on June 10, 2002 and first light is scheduled in October 2002.

Paper Details

Date Published: 7 March 2003
PDF: 12 pages
Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.460316
Show Author Affiliations
Stephan Aune, CEA Saclay (France)
Olivier Boulade, CEA Saclay (France)
Xavier Charlot, CEA Saclay (France)
P. Abbon, CEA Saclay (France)
Pierre Borgeaud, CEA Saclay (France)
Pierre-Henri Carton, CEA Saclay (France)
M. Carty, CEA Saclay (France)
J. Da Costa, CEA Saclay (France)
D. Desforge, CEA Saclay (France)
H. Deschamps, CEA Saclay (France)
Dominique Eppelle, CEA Saclay (France)
Pascal Gallais, CEA Saclay (France)
L. Gosset, CEA Saclay (France)
Remy Granelli, CEA Saclay (France)
Michel Gros, CEA Saclay (France)
Jean de Kat, CEA Saclay (France)
Denis Loiseau, CEA Saclay (France)
J. L. Ritou, CEA Saclay (France)
Jean Yves Rousse, CEA Saclay (France)
Pierre Starzynski, CEA Saclay (France)
Nicolas Vignal, CEA Saclay (France)
Laurent G. Vigroux, CEA Saclay (France)

Published in SPIE Proceedings Vol. 4841:
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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