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arXiv · 1407.2999

On-instrument wavefront sensor design for the TMT infrared imaging spectrograph (IRIS) update

Jennifer Dunn·Vlad Reshetov·Jenny Atwood·John Pazder·Bob Wooff·David Loop·Leslie Saddlemyer·Anna M. Moore·James E. Larkin
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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, Vlad Reshetov, Jenny Atwood, John Pazder, Bob Wooff, David Loop, Leslie Saddlemyer, Anna M. Moore, James E. Larkin. 2014-07-11. On-instrument wavefront sensor design for the TMT infrared imaging spectrograph (IRIS) update. https://doi.org/10.1117/12.2057257

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