SCALES on Keck: optical design

Renate Kupke; R. Deno Stelter; Amirul Hasan; Arun Surya; Isabel Kain; Zackery Briesemeister; Jialin Li; Phil Hinz; Andrew Skemer; Benjamin Gerard; Daren Dillon; Christopher Ratliff

doi:10.1117/12.2630642

29 August 2022 SCALES on Keck: optical design

Renate Kupke, R. Deno Stelter, Amirul Hasan, Arun Surya, Isabel Kain, Zackery Briesemeister, Jialin Li, Phil Hinz, Andrew Skemer, Benjamin Gerard, Daren Dillon, Christopher Ratliff

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121844A (2022) https://doi.org/10.1117/12.2630642
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

SCALES is a high-contrast, infrared coronagraphic imager and integral field spectrograph (IFS) to be deployed behind the W.M. Keck Observatory adaptive optics system. A reflective optical design allows diffraction-limited imaging over a large wavelength range (1.0 - 5.0 µm). A microlens array-based IFS coupled with a lenslet reformatter (”slenslit”) allow spectroscopy at both low (R = 35 - 250) and moderate (R = 2000 - 6500) spectral resolutions. The large wavelength range, diffraction-limited performance, high contrast coronagraphy and cryogenic operation present a unique optical design challenge. We present the full SCALES optical design, including performance modeling and analysis and manufacturing.

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Renate Kupke, R. Deno Stelter, Amirul Hasan, Arun Surya, Isabel Kain, Zackery Briesemeister, Jialin Li, Phil Hinz, Andrew Skemer, Benjamin Gerard, Daren Dillon, and Christopher Ratliff "SCALES on Keck: optical design", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121844A (29 August 2022); https://doi.org/10.1117/12.2630642

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