CAMIRAS 192x128: instrumental upgrades and latest results

Philippe Galdemard; Pierre-Olivier Lagage; Rene Jouan; Pierre Masse; Didier Dubreuil

doi:10.1117/12.317335

21 August 1998 CAMIRAS 192x128: instrumental upgrades and latest results

Philippe Galdemard, Pierre-Olivier Lagage, Rene Jouan, Pierre Masse, Didier Dubreuil

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317335
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

CAMIRAS, the Saclay ground-based mid-IR camera, was built in 1990. At the time it was equipped with a 64 X 64 pixels Si:Ga array, developed by LETI/LIR, as a by-product of the detectors for ISOCAM. CAMIRAS has been intensively used at CFHT and at the Nordic Optical Telescope since 1991. In 1995, LETI/LIR delivered 192 X 192 Si:Ga arrays. Such a detector has been integrated in CAMIRAS in March 1995, and its acquisition system has been upgraded. The instrument is very versatile; several configurations allow to optimize it either at 10 microns or at 17 microns. CAMIRAS was mounted with the new 192 X 128 detector array at CFHT in July 1996. THis paper gives a full instrumental description of CAMIRAS. A particular attention is given to the spectro- imaging capability of the instrument achieved with a circular variable filter. Results from the last 3 observing campaigns carried out at the TIRGO observatory and at the Nordic Optical Telescope illustrate this paper. Spectra of comet Hale-Bopp showing the silicates features in the 8-13 microns wavelength range are presented.

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Philippe Galdemard, Pierre-Olivier Lagage, Rene Jouan, Pierre Masse, and Didier Dubreuil "CAMIRAS 192x128: instrumental upgrades and latest results", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317335

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KEYWORDS

Sensors

Telescopes

Comets

Cameras

Mid-IR

Ceramics

Interfaces

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