Assembly, integration, and laboratory testing of the EXCITE spectrograph

Lee Bernard; John Gamaunt; Logan Jensen; Nat Butler; Michael Line; Kanchita Klangboonkrong; Jennifer Patience; Annalies Kleyheeg; Tim Rehm; Greg Tucker; Subhajit Sarkar; Nikole Lewis; Paul Scowen; Peter Nagler; Kyle Helson; Dan Kelly; Ed Leong; Steve Maher; Ryan McClelland; Qian Gong; Laddawan Miko; Augustyn Waczynski; Vivien Parmentier; Andrea Bocchieri; Azzurra D'Alessandro; Enzo Pascale; Lorenzo Mugnai; John Hartley; Steven Li; Javier Romualdez; Calvin Netterfield; Quentin Changeat; Billy Edwards; Ingo Waldmann; Conor Earley

doi:10.1117/12.3019286

19 July 2024 Assembly, integration, and laboratory testing of the EXCITE spectrograph

Lee Bernard, John Gamaunt, Logan Jensen, Nat Butler, Michael Line, Kanchita Klangboonkrong, Jennifer Patience, Annalies Kleyheeg, Tim Rehm, Greg Tucker, Subhajit Sarkar, Nikole Lewis, Paul Scowen, Peter Nagler, Kyle Helson, Dan Kelly, Ed Leong, Steve Maher, Ryan McClelland, Qian Gong, Laddawan Miko, Augustyn Waczynski, Vivien Parmentier, Andrea Bocchieri, Azzurra D'Alessandro, Enzo Pascale, Lorenzo Mugnai, John Hartley, Steven Li, Javier Romualdez, Calvin Netterfield, Quentin Changeat, Billy Edwards, Ingo Waldmann, Conor Earley

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 13096A5 (2024) https://doi.org/10.1117/12.3019286
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The EXoplanet Climate Infrared TElescope (EXCITE) is a near-infrared spectrograph (0.8-4μm, R~50) designed for measuring spectroscopic phase curves of transiting hot Jupiter-type exoplanets that operates off a high-altitude balloon platform. Phase curves produce a combination of phase curve and transit/eclipse spectroscopy, providing a wealth of information for characterizing exoplanet atmospheres. EXCITE will be a first-of-kind dedicated telescope uniquely able to observe a target nearly uninterrupted for tens of hours, enabling phase curve measurements, and complementing JWST. The spectrometer has two channels, a 0.8-2.5 μm band and a 2.5-4.0 μm band, providing a spectrum with an average spectral resolution of R~50. Two Off-Axis Parabolic (OAP) mirrors, with a CaF2 prism providing dispersion, reimage the telescope focal plane to provide on-axis, diffraction-limited performance. The spectrum is imaged with a single JWST flight spare Teledyne H2RG detector, providing Nyquist sampling of each channel. Here, we discuss the spectrograph assembly and integration as well as laboratory characterization and acceptance testing.

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Lee Bernard, John Gamaunt, Logan Jensen, Nat Butler, Michael Line, Kanchita Klangboonkrong, Jennifer Patience, Annalies Kleyheeg, Tim Rehm, Greg Tucker, Subhajit Sarkar, Nikole Lewis, Paul Scowen, Peter Nagler, Kyle Helson, Dan Kelly, Ed Leong, Steve Maher, Ryan McClelland, Qian Gong, Laddawan Miko, Augustyn Waczynski, Vivien Parmentier, Andrea Bocchieri, Azzurra D'Alessandro, Enzo Pascale, Lorenzo Mugnai, John Hartley, Steven Li, Javier Romualdez, Calvin Netterfield, Quentin Changeat, Billy Edwards, Ingo Waldmann, and Conor Earley "Assembly, integration, and laboratory testing of the EXCITE spectrograph", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 13096A5 (19 July 2024); https://doi.org/10.1117/12.3019286

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