Conference proceeding
The fourth flight of CHESS: spectral resolution enhancements for high-resolution FUV spectroscopy
SPACE TELESCOPES AND INSTRUMENTATION 2018: ULTRAVIOLET TO GAMMA RAY, Vol.10699, pp.106990K-106990K-20
Proceedings of SPIE
01/01/2018
DOI: 10.1117/12.2312877
Abstract
In this proceeding, we describe the scientific motivation and technical development of the Colorado High-resolution Echelle Stellar Spectrograph (CHESS), focusing on the hardware advancements and testing of components for the fourth and final launch of the payload (CHESS-4). CHESS is a far ultraviolet rocket-borne instrument designed to study the atomic-to-molecular transitions within translucent cloud regions in the interstellar medium. CHESS is an objective echelle spectrograph, which uses a mechanically-ruled echelle and a powered (f/12.4) cross-dispersing grating; it is designed to achieve a resolving power R > 100,000 over the band pass lambda lambda 1000-1600 angstrom. CHESS-4 utilizes a 40 mm-diameter cross-strip anode readout microchannel plate detector, fabricated by Sensor Sciences LLC, to achieve high spatial resolution with high global count rate capabilities (similar to MHz). An error in the fabrication of the cross disperser limited the achievable resolution on previous launches of the payload to R similar to 4000. To remedy this for CHESS-4, we physically stress the echelle grating, introducing a shallow toroidal curvature to the surface of the optic. Preliminary laboratory measurements of the resulting spectrum show a factor of 4-5 improvement to the resolving power. Results from final efficiency and refllectivity measurements for the optical components of CHESS-4 are presented, along with the pre-flight laboratory spectra and calibration results. CHESS-4 launched on 17 April 2018 aboard NASA/University of Colorado Boulder sounding rocket mission 36.333 UG. We present flight results for the observation of the gamma Ara sightline.
Details
- Title: Subtitle
- The fourth flight of CHESS: spectral resolution enhancements for high-resolution FUV spectroscopy
- Creators
- Nicholas Kruczek - Univ Colorado, Lab Atmospher & Space Phys, UCB 600,Space Sci Bldg SPSC,3665 Discovery Dr, Boulder, CO 80309 USANicholas Nell - Univ Colorado, Lab Atmospher & Space Phys, UCB 600,Space Sci Bldg SPSC,3665 Discovery Dr, Boulder, CO 80309 USAKevin France - Univ Colorado, Lab Atmospher & Space Phys, UCB 600,Space Sci Bldg SPSC,3665 Discovery Dr, Boulder, CO 80309 USAKeri Hoadley - California Institute of TechnologyBrian Fleming - Univ Colorado, Lab Atmospher & Space Phys, UCB 600,Space Sci Bldg SPSC,3665 Discovery Dr, Boulder, CO 80309 USAStefan Ulrich - Univ Colorado, Lab Atmospher & Space Phys, UCB 600,Space Sci Bldg SPSC,3665 Discovery Dr, Boulder, CO 80309 USAAlexander D. Miller - Arizona State UniversityArika Egan - Univ Colorado, Lab Atmospher & Space Phys, UCB 600,Space Sci Bldg SPSC,3665 Discovery Dr, Boulder, CO 80309 USAEmily Witt - Univ Colorado, Lab Atmospher & Space Phys, UCB 600,Space Sci Bldg SPSC,3665 Discovery Dr, Boulder, CO 80309 USARobert Kane - Circle (United States)
- Contributors
- JWA DenHerder (Editor)S Nikzad (Editor)K Nakazawa (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- SPACE TELESCOPES AND INSTRUMENTATION 2018: ULTRAVIOLET TO GAMMA RAY, Vol.10699, pp.106990K-106990K-20
- Series
- Proceedings of SPIE
- DOI
- 10.1117/12.2312877
- ISSN
- 0277-786X
- eISSN
- 1996-756X
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 20
- Grant note
- NNX13AF55G; NNX16AG28G / NASA; National Aeronautics & Space Administration (NASA)
- Language
- English
- Date published
- 01/01/2018
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428794602771
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