Design and testing of a low-resolution NIR spectrograph for the EXoplanet Climate Infrared TElescope

Thumbnail Image

Files

1218429.pdf (6.62 MB)

Links to Files

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12184/1218429/Design-and-testing-of-a-low-resolution-NIR-spectrograph-for/10.1117/12.2629717.full

Permanent Link

https://doi.org/10.1117/12.2629717
 http://hdl.handle.net/11603/26839

Collections

UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0001-9238-4918

Date

2022-08-29

Type of Work

conference papers and proceedings
Text

Department

Program

Citation of Original Publication

Lee Bernard, Logan Jensen, John Gamaunt, Nat Butler, Andrea Bocchieri, Quentin Changeat, Azzurra D'Alessandro, Billy Edwards, Qian Gong, John Hartley, Kyle Helson, Dan Kelly, Kanchita Klangboonkrong, Annalies Kleyheeg, Nikole Lewis, Steven Li, Michael Line, Stephen Maher, Ryan McClelland, Laddawan Miko, Lorenzo Mugnai, Peter Nagler, Barth Netterfield, Vivien Parmentier, Enzo Pascale, Jennifer Patience, Tim Rehm, Javier Romualdez, Subhajit Sarkar, Paul Scowen, Gregory S. Tucker, Augustyn Waczynski, and Ingo Waldman "Design and testing of a low-resolution NIR spectrograph for the EXoplanet Climate Infrared TElescope", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 1218429 (29 August 2022); https://doi.org/10.1117/12.2629717

Rights

This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0

Subjects

Abstract

The EXoplanet Climate Infrared TElescope (EXCITE) experiment is a balloon-borne, purpose-designed mission to measure spectroscopic phase curves of short-period extrasolar giant planets (EGPs, or “hot Jupiters”). Here, we present EXCITE’s principal science instrument: a high-throughput, single-object spectrograph operating in the 0.8-2.5 µm and 2.5-4.0 µm bands with R≥50. Our compact design achieves diffraction-limited, on-axis performance with just three powered optics: two off-axis parabolic mirrors and a CaF2 prism. We discuss the optical and mechanical design, the expected optical performance of the spectrograph, and summarize the tolerances needed to achieve that performance. We also discuss plans for establishing alignment of the optics and verifying the optical performance.