Cryogenic performance of the NIRSPEC three-mirror anastigmat

Joseph L. Robichaud; Brian Zellers; Richard Philippon; Ian S. McLean; Donald Frank Figer

doi:10.1117/12.317230

21 August 1998 Cryogenic performance of the NIRSPEC three-mirror anastigmat

Joseph L. Robichaud, Brian Zellers, Richard Philippon, Ian S. McLean, Donald Frank Figer

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317230
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The cryogenic optical performance of an all aluminum three mirror anastigmat re-imager developed for the NIRSPEC instrument is reported. Details pertaining to the optical and mechanical design, structural/thermal modeling, initial performance projections, optical/mechanical fabrication, optical alignment, and optical testing procedures are all presented. The operational performance of the optical system at ambient and at cryogenic temperatures is presented and compared with initial performance projections. The optical subsystem has been delivered to UCLA for integration into the NIRSPEC instrument, final installation will be done at the Keck Observatory.

Citation Download Citation

Joseph L. Robichaud, Brian Zellers, Richard Philippon, Ian S. McLean, and Donald Frank Figer "Cryogenic performance of the NIRSPEC three-mirror anastigmat", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317230

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