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Proceedings Paper

On-instrument wavefront sensor design for the TMT infrared imaging spectrograph (IRIS) update
Author(s): Jennifer Dunn; Vladimir Reshetov; Jenny Atwood; John Pazder; Bob Wooff; David Loop; Leslie Saddlemyer; Anna M. Moore; James E. Larkin
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Paper Abstract

The first light instrument on the Thirty Meter Telescope (TMT) project will be the InfraRed Imaging Spectrograph (IRIS). IRIS will be mounted on a bottom port of the facility AO instrument NFIRAOS. IRIS will report guiding information to the NFIRAOS through the On-Instrument Wavefront Sensor (OIWFS) that is part of IRIS. This will be in a self-contained compartment of IRIS and will provide three deployable wavefront sensor probe arms. This entire unit will be rotated to provide field de-rotation. Currently in our preliminary design stage our efforts have included: prototyping of the probe arm to determine the accuracy of this critical component, handling cart design and reviewing different types of glass for the atmospheric dispersion.

Paper Details

Date Published: 28 July 2014
PDF: 15 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91479H (28 July 2014); doi: 10.1117/12.2057257
Show Author Affiliations
Jennifer Dunn, NRC - Herzberg Institute of Astrophysics (Canada)
Vladimir Reshetov, NRC - Herzberg Institute of Astrophysics (Canada)
Jenny Atwood, NRC - Herzberg Institute of Astrophysics (Canada)
John Pazder, NRC - Herzberg Institute of Astrophysics (Canada)
Bob Wooff, NRC - Herzberg Institute of Astrophysics (Canada)
David Loop, NRC - Herzberg Institute of Astrophysics (Canada)
Leslie Saddlemyer, NRC - Herzberg Institute of Astrophysics (Canada)
Anna M. Moore, Caltech Optical Observatories (United States)
James E. Larkin, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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