Cryogenic test results of first SCALES rotary stage

Michael Gonzales; Deno Stelter; Christopher Ratliff; Dale Sandford; William Deich; Aaron Hunter; Nicholas MacDonald; Gerald Cabak; David Black; Andrew Skemer

doi:10.1117/12.3020851

19 July 2024 Cryogenic test results of first SCALES rotary stage

Michael Gonzales, Deno Stelter, Christopher Ratliff, Dale Sandford, William Deich, Aaron Hunter, Nicholas MacDonald, Gerald Cabak, David Black, Andrew Skemer

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130966Z (2024) https://doi.org/10.1117/12.3020851
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

We present preliminary laboratory cryogenic testing and validation results for the first rotary stage for SCALES (Slicer Combined with an Array of Lenslets for Exoplanet Spectroscopy). SCALES is a 2-5 micron high-contrast lenslet integral field spectrograph currently undergoing final design and testing for the W. M. Keck Observatory. The rotary stage, known as the Lyot mechanism, is a rotating wheel with 15 selectable pupil masks and optics. When deployed behind the Keck Adaptive Optics system, SCALES will be used to detect and characterize a wide variety of exoplanets. To minimize thermal emission, all optical and mechanical components of SCALES are fully cryogenic. Testing was first performed at ambient temperatures and pressures, then validated under vacuum at cryogenic temperatures.

Citation Download Citation

Michael Gonzales, Deno Stelter, Christopher Ratliff, Dale Sandford, William Deich, Aaron Hunter, Nicholas MacDonald, Gerald Cabak, David Black, and Andrew Skemer "Cryogenic test results of first SCALES rotary stage", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130966Z (19 July 2024); https://doi.org/10.1117/12.3020851

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