The Infrared Imaging Spectrograph (IRIS) for TMT: on-instrument wavefront sensors (OIWFS) and NFIRAOS interface

Creators: Loop, David; Reshetov, Vlad; Fletcher, Murray; Wooff, Robert; Dunn, Jennifer; Moore, Anna; Smith, Roger; Hale, David; Dekany, Richard; Wang, Lianqi; Ellerbroek, Brent; Simard, Luc; Crampton, David

Others:: McLean, Ian S.; Ramsay, Suzanne K.; Takami, Hideki

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Abstract

The InfraRed Imaging Spectrograph (IRIS) is a first light client science instrument for the TMT observatory that operates as a client of the NFIRAOS facility multi-conjugate adaptive optics system. This paper reports on the concept study and baseline concept design of the On-Instrument WaveFront Sensors (OIWFS) and NFIRAOS interface subsystems of the IRIS science instrument, a collaborative effort by NRC-HIA, Caltech, and TMT AO and Instrument teams. This includes work on system engineering, structural and thermal design, sky coverage modeling, patrol geometry, probe optics and mechanics design, camera design, and controls design.

Additional Information

© 2010 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors gratefully acknowledge the support of the TMT partner institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, and the University of California. This work was supported as well by the Gordon and Betty Moore Foundation, the National Research Council of Canada, the Association of Universities for Research in Astronomy (AURA) and the U.S. National Science Foundation.

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