Ultraviolet Spectrograph Telescope for Astronomical Research (UVSTAR): a spectrographic telescope for the Shuttle Hitchhiker-M bridge

Roberto Stalio; A. Lyle Broadfoot; Jay B. Holberg; Franco Viola; J. Sabbah

doi:10.1117/12.193196

7 November 1994 Ultraviolet Spectrograph Telescope for Astronomical Research (UVSTAR): a spectrographic telescope for the Shuttle Hitchhiker-M bridge

Roberto Stalio, A. Lyle Broadfoot, Jay B. Holberg, Franco Viola, J. Sabbah

Author Affiliations +

Proceedings Volume 2283, X-Ray and Ultraviolet Spectroscopy and Polarimetry; (1994) https://doi.org/10.1117/12.193196
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

UVSTAR is an EUV spectral imager intended as a facility instrument devoted to solar system and astronomy studies. It covers the wavelength range of 500 to 1250 angstrom, with sufficient spectral resolution to separate emission lines and to form spectrally resolved images of extended plasma sources. Targets include the Io plasma torus at Jupiter, hot stars, planetary nebulae and bright galaxies. UVSTAR consists of a pair of telescopes and concave grating spectrographs that cover the overlapping spectral ranges of 500 - 900 and 850 - 1250 angstrom. The telescopes use two 30 cm diameter off-axis paraboloids having a focal length of 1.5 m. An image of the target is formed at the entrance slits of the two concave grating spectrographs. The gratings provide dispersion and re-image the slits at the detectors, intensified CCDs. The readout format of the detectors can be chosen by computer, and three slit widths are selectable to adapt the instrument to specific tasks. UVSTAR has internal gimbals which allow rotation of +/- 3 degree(s) about each of two axes. Dedicated finding and tracking telescopes will acquire and track the target after rough pointing is achieved by orienting the orbiter. Responsibilities for implementation and utilization of UVSTAR are shared by groups in Italy and the U.S. The first of the five approved UVSTAR flights is scheduled for May 1995.

Citation Download Citation

Roberto Stalio, A. Lyle Broadfoot, Jay B. Holberg, Franco Viola, and J. Sabbah "Ultraviolet Spectrograph Telescope for Astronomical Research (UVSTAR): a spectrographic telescope for the Shuttle Hitchhiker-M bridge", Proc. SPIE 2283, X-Ray and Ultraviolet Spectroscopy and Polarimetry, (7 November 1994); https://doi.org/10.1117/12.193196

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KEYWORDS

Spectrographs

Stars

Telescopes

Sensors

Extreme ultraviolet

Astronomy

Ultraviolet radiation

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