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Journal of Astronomical Telescopes, Instruments, and Systems

Extension of ATLAST/LUVOIR’s capabilities to 5 μm or beyond
Author(s): Michael W. Werner; Mark R. Swain; Gautam Vasisht; Xu Wang; Steven A. Macenka; Avi M. Mandell; Shawn Domagal-Goldman; Joel D. Green; Christopher C. Stark
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Paper Abstract

ATLAST is a particular realization of the Large Ultraviolet Optical Infrared telescope (LUVOIR), a ∼10-m diameter space telescope being defined for consideration in the 2020 Decadal Review of astronomy and astrophysics. ATLAST/LUVOIR is generally thought of as an ambient temperature (∼300  K) system, and little consideration has been given to using it at infrared wavelengths longward of ∼2  μm. We assess the scientific and technical benefits of operating such a telescope further into the infrared, with particular emphasis on the study of exoplanets, which is a major science theme for ATLAST/LUVOIR. For the study of exoplanet atmospheres, the capability to work at least out to 5.0  μm is highly desirable. Such an extension of the long wavelength limit of ATLAST would greatly increase its capabilities for studies of exoplanet atmospheres and provide powerful capabilities for the study of a wide range of astrophysical questions. We present a concept for a fiber-fed grating spectrometer, which would enable R=200 spectroscopy on ATLAST with minimal impact on the other focal planet instruments. We conclude that it is technically feasible and highly desirable scientifically to extend the wavelength range of ATLAST to at least 5  μm.

Paper Details

Date Published: 22 June 2016
PDF: 10 pages
J. Ast. Inst. Sys. 2(4) 041205 doi: 10.1117/1.JATIS.2.4.041205
Published in: Journal of Astronomical Telescopes, Instruments, and Systems Volume 2, Issue 4
Show Author Affiliations
Michael W. Werner, Jet Propulsion Lab. (United States)
Mark R. Swain, Jet Propulsion Lab. (United States)
Gautam Vasisht, Jet Propulsion Lab. (United States)
Xu Wang, Jet Propulsion Lab. (United States)
Steven A. Macenka, Jet Propulsion Lab. (United States)
Avi M. Mandell, NASA Goddard Space Flight Ctr. (United States)
Shawn Domagal-Goldman, NASA Goddard Space Flight Ctr. (United States)
Joel D. Green, Space Telescope Science Institute (United States)
Christopher C. Stark, Space Telescope Science Institute (United States)

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