MIRCAMOS: a mosaic IR camera and multi-object spectrograph for CFHT

Rene Doyon; Simon Thibault; Daniel Nadeau; Philippe Vallee

doi:10.1117/12.395428

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16 August 2000 MIRCAMOS: a mosaic IR camera and multi-object spectrograph for CFHT

Rene Doyon, Simon Thibault, Daniel Nadeau, Philippe Vallee

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Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395428
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

We present the preliminary conceptual design of a Mosaic IR Camera and Multi-Object Spectrography (MIRCAMOS) for the Canada-France-Hawaii Telescope. The instrument houses 4 Hawaii-2 2048 by 2048 HgCdTe detectors sensitive between 0.8 and 2.5 micrometers . The optics is all reflective, featuring a warm corrector with fast tip/tilt capability and 4 cryogenic optical trains. The pixel scale is 0.20 inch/pixel yielding a field of view of 13.7 feet by 13.7 feet. Z, J, H or K band spectroscopy at R approximately 1500 is obtained with a single grating setting. A cryogenic slit wheel unit featuring several positions for multi-object custom masks is mounted within a separate cryostat designed to be thermally cycled within 8 hours for rapid exchange of MOS masks. Each mask can hold up to approximately 300 slitlets distributed over a FOV of 7 feet by 13.7 feet. MIRCAMOS is very competitive compared with similar instruments planned for 8- 10 m telescopes.

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Rene Doyon, Simon Thibault, Daniel Nadeau, and Philippe Vallee "MIRCAMOS: a mosaic IR camera and multi-object spectrograph for CFHT", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395428

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