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  • 1
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    Space astrophysics with large structures - CASES and P/OF (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Space instruments for remote sensing, of the types used for astrophysics and solar-terrestrial physics among many disciplines, will grow to larger physical sizes in the future. The zero-g space environment does not inherently restrict such growth, because relatively lightweight structures can be used. Active servo control of the structures can greatly increase their size for a given mass. The Pinhole/Occulter Facility, a candidate Space Station attached payload, offers an example: it will achieve 0.2 arc s resolution by use of a 50-m baseline for coded-aperture telescopes for hard X-ray and gamma-ray imagers.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: High-energy astrophysics in the 21st century; Dec 11, 1989 - Dec 14, 1989; Taos, NM; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Hard X-ray and gamma-ray imaging spectroscopy for the next solar maximum (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The objectives and principles are described of a single spectroscopic imaging package that can provide effective imaging in the hard X- and gamma-ray ranges. Called the High-Energy Solar Physics (HESP) mission instrument for solar investigation, the device is based on rotating modulation collimators with germanium semiconductor spectrometers. The instrument is planned to incorporate thick modulation plates, and the range of coverage is discussed. The optics permit the coverage of high-contrast hard X-ray images from small- and medium-sized flares with large signal-to-noise ratios. The detectors allow angular resolution of less than 1 arcsec, time resolution of less than 1 arcsec, and spectral resolution of about 1 keV. The HESP package is considered an effective and important instrument for investigating the high-energy solar events of the near-term future efficiently.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: EUV, X-ray and Gamma-Ray Instrumentation for Astronomy; Jul 11, 1990 - Jul 13, 1990; San Diego, CA; United States
    Format: text
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    NASA TECHNICAL REPORTS
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