28 July 2014 On-instrument wavefront sensor design for the TMT infrared imaging spectrograph (IRIS) update
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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.
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Jennifer Dunn, Jennifer Dunn, Vladimir Reshetov, Vladimir Reshetov, Jenny Atwood, Jenny Atwood, John Pazder, John Pazder, Bob Wooff, Bob Wooff, David Loop, David Loop, Leslie Saddlemyer, Leslie Saddlemyer, Anna M. Moore, Anna M. Moore, James E. Larkin, James E. Larkin, } "On-instrument wavefront sensor design for the TMT infrared imaging spectrograph (IRIS) update", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91479H (28 July 2014); doi: 10.1117/12.2057257; https://doi.org/10.1117/12.2057257
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