Physics and Astronomy Faculty Publications and Presentations
Document Type
Article
Publication Date
12-9-2024
Abstract
The Exoplanet Transmission Spectroscopy Imager (ETSI) amalgamates a low-resolution slitless prism spectrometer with custom multi-band filters to simultaneously image 15 spectral bandpasses between 430 and 975 nm with an average spectral resolution of R = λ / δ λ ∼ 20 . ETSI requires only moderate telescope apertures ( ∼ 2 m ), is capable of characterizing an exoplanet atmosphere in as little as a single transit, enabling the selection of the most interesting targets for further characterization with other ground and space-based observatories, and is also well suited to multi-band observations of other variable and transient objects. This enables a new technique, common-path multi-band imaging, used to observe transmission spectra of exoplanets transiting bright ( V < 14 magnitude) stars. ETSI is capable of near photon-limited observations, with a systematic noise floor on par with the Hubble Space Telescope and below the Earth’s atmospheric amplitude scintillation noise limit. We report the as-built instrument optical and optomechanical design, detectors, control system, telescope hardware and software interfaces, and data reduction pipeline. A summary of ETSI’s science capabilities and the initial results are also included.
Recommended Citation
Schmidt, Luke M., Ryan J. Oelkers, Erika Cook, Mary Anne Limbach, Darren L. DePoy, Jennifer L. Marshall, Landon Holcomb, Willians Pena, Jacob Purcell, and Enrique Gonzalez Vega. "Rapid characterization of exoplanet atmospheres with the Exoplanet Transmission Spectroscopy Imager." Journal of Astronomical Telescopes, Instruments, and Systems 10, no. 4 (2024): 045005-045005. https://doi.org/10.1117/1.JATIS.10.4.045005
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Title
Journal of Astronomical Telescopes, Instruments, and Systems
DOI
https://doi.org/10.1117/1.JATIS.10.4.045005
Comments
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.