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  • 1
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    Ultraviolet stellar spectrophotometry from a balloon platform (1974)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A 40 centimeter diameter aperture, balloon-borne telescope and ultraviolet spectrometer is described and selected scientific results are briefly reviewed. The general configuration of the 0.4 angstrom resolution instrument is shown and the utilization of servo-controlled secondary mirror, image dissector detector, and special mirror coatings are discussed. An outlook for astronomical research in the mid-ultraviolet from balloon-borne telescopes is presented together with future development plans for JSC's balloon-borne payload.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Telescope Systems for Balloon-Borne Res.; p 107-119
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    State variable determination for digital control. (1966)
    In:  Other Sources
    Details
    Publication Date: 2019-05-30
    Description: State vector determination for digital optimal control of system characterized by matrix equation
    Keywords: ELECTRONICS
    Type: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Near-infrared spectral imaging Michelson interferometer for astronomical applications (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The design and operation of an imaging Michelson interferometer-spectrometer used for near-infrared (0.8 micron to 2.5 microns) spectral imaging are reported. The system employs a rapid scan interferometer modified for stable low resolution (250/cm) performance and a 42 element PbS linear detector array. A microcomputer system is described which provides data acquisition, coadding, and Fourier transformation for near real-time presentation of the spectra of all 42 scene elements. The electronic and mechanical designs are discussed and telescope performance data presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Seminar on Infrared imaging systems technology; Apr 10, 1980 - Apr 11, 1980; Washington, DC
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Balloon-borne ultraviolet stellar spectrometer. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Description of the design and operation of a balloon-borne telescope-spectrometer system, intended to perform spectrophotometric measurements of the Mg II doublet at 2795 A and 2802 A in stars of visual magnitude 5 or brighter, with a spectral resolution of 0.5 A. It is shown that the system permits considerable flexibility in programming which, in turn, affords great versatility in observational planning and makes the system suitable for detailed studies of specific objects, as well as for survey work.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Seminar-in-Depth on Instrumentation in astronomy; Mar 13, 1972 - Mar 15, 1972; Tucson, AZ
    Format: text
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    NASA TECHNICAL REPORTS
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