The Infrared Imaging Spectrograph (IRIS) for TMT: the atmospheric dispersion corrector

Andrew C. Phillips; Brian J. Bauman; James E. Larkin; Anna M. Moore; Cynthia N. Niehaus; David Crampton; Luc Simard

doi:10.1117/12.856475

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20 July 2010 The Infrared Imaging Spectrograph (IRIS) for TMT: the atmospheric dispersion corrector

Andrew C. Phillips, Brian J. Bauman, James E. Larkin, Anna M. Moore, Cynthia N. Niehaus, David Crampton, Luc Simard

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Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 77355Q (2010) https://doi.org/10.1117/12.856475
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We present a conceptual design for the atmospheric dispersion corrector (ADC) for TMT's Infrared Imaging Spectrograph (IRIS). The severe requirements of this ADC are reviewed, as are limitations to observing caused by uncorrectable atmospheric effects. The requirement of residual dispersion less than 1 milliarcsecond can be met with certain glass combinations. The design decisions are discussed and the performance of the design ADC is described. Alternative options and their performance tradeoffs are also presented.

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Andrew C. Phillips, Brian J. Bauman, James E. Larkin, Anna M. Moore, Cynthia N. Niehaus, David Crampton, and Luc Simard "The Infrared Imaging Spectrograph (IRIS) for TMT: the atmospheric dispersion corrector", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77355Q (20 July 2010); https://doi.org/10.1117/12.856475

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