UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

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

Bernard, Lee; Jensen, Logan; Gamaunt, Johnathan; Butler, Nat; Bocchieri, Andrea; Changeat, Quentin; D'Alessandro, Azzurra; ... Waldmann, Ingo; + view all (2022) Design and testing of a low-resolution NIR spectrograph for the EXoplanet Climate Infrared TElescope. In: Evans, CJ and Bryant, JJ and Motohara, K, (eds.) Ground-based and Airborne Instrumentation for Astronomy IX. SPIE - The International Society for Optical Engineering: Montreal, QC, Canada. Green open access

[thumbnail of 1218429.pdf] Text
1218429.pdf - Published Version

Download (6MB)

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.

Type: Proceedings paper
Title: Design and testing of a low-resolution NIR spectrograph for the EXoplanet Climate Infrared TElescope
Event: SPIE Astronomical Telescopes + Instrumentation 2022
Location: Montreal, CANADA
Dates: 17 Jul 2022 - 22 Jul 2022
ISBN-13: 978-1-5106-5349-8
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2629717
Publisher version: https://doi.org/10.1117/12.2629717
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Exoplanet spectroscopy, hot Jupiters, balloon-borne instrumentation, infrared instrumentation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10160199
Downloads since deposit
1Download
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item