Weighing exo-atmospheres: a novel mid-resolution spectral mode for SCALES

R. Deno Stelter; Andrew J. Skemer; Renate Kupke; Cyril Bourgenot; Raquel A. Martinez; Stephanie S. Sallum

doi:10.1117/12.2630400

29 August 2022 Weighing exo-atmospheres: a novel mid-resolution spectral mode for SCALES

R. Deno Stelter, Andrew J. Skemer, Renate Kupke, Cyril Bourgenot, Raquel A. Martinez, Stephanie S. Sallum

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 1218445 (2022) https://doi.org/10.1117/12.2630400
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

SCALES (Slicer Combined with an Array of Lenslets for Exoplanet Spectroscopy) is a 2 - 5 micron high-contrast lenslet-based integral field spectrograph (IFS) designed to characterize exoplanets and their atmospheres. Like other lenslet-based IFSs, SCALES produces a short micro-spectrum of each lenslet’s micro-pupil. We have developed an image slicer that sits behind the lenslet array & dissects and rearranges a subset of micro-pupils into a pseudo-slit. The combination lenslet array and slicer (or slenslit) allows SCALES to produce much longer spectra, thereby increasing the spectral resolution by over an order of magnitude and allowing for comparisons to atmospheric modeling at unprecedented resolution. This proceeding describes the design and performance of the slenslit.

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R. Deno Stelter, Andrew J. Skemer, Renate Kupke, Cyril Bourgenot, Raquel A. Martinez, and Stephanie S. Sallum "Weighing exo-atmospheres: a novel mid-resolution spectral mode for SCALES", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 1218445 (29 August 2022); https://doi.org/10.1117/12.2630400

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