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  • 2000-2004
  • 1970-1974  (2)
  • 1925-1929
  • 1910-1914
  • 1972  (2)
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  • 2000-2004
  • 1970-1974  (2)
  • 1925-1929
  • 1910-1914
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  • 1
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    The UHURU X-ray instrument. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: On Dec. 12, 1970, the UHURU X-ray observatory was launched into equatorial orbit with the prime mission of conducting an all-sky survey of astronomical X-ray sources with intensities of 0.00005 Sco-X1 or greater. The X-ray detection system contains 12 gas-filled proportional counters, 6 behind each collimator. The aspect system is discussed together with the structure, the pulse height analyzer, the command system, the calibration system, and the power distribution system. Pulse shape discrimination circuits used on UHURU use the same technique that was used on the system originally developed for large area proportional counters described by Gorenstein and Mickiewicz (1968).
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The Uhuru star aspect sensor. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Description of the star sensor used in the spin-stabilized Uhuru satellite for the purpose of detecting and locating stellar X-ray sources. The star sensor had the capability of detecting fourth-magnitude stars to within 1 arc minute of azimuth and 2 arc minutes of elevation. This was achieved with the aid of a slightly modified 76-mm, f/0.87 Super Farron lens, an 'n' shaped reticle located in the focal plane, and an RCA CF70114F photomultiplier serving as the detection element. The star sensor is composed of three major components - a high-voltage power supply, the photomultiplier, and an amplifier.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Annual Electro-Optical Systems Design Conference; Sep 12, 1972 - Sep 14, 1972; New York, NY
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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