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  • INSTRUMENTATION AND PHOTOGRAPHY  (2)
  • SPACECRAFT INSTRUMENTATION
  • 1970-1974  (2)
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  • 1
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    Unknown
    The GSFC EUV and X-ray spectroheliograph on OSO-7 (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The Goddard Space Flight Center instrument carried on the pointed section of the OSO-7 satellite is described. This instrument contains: an extreme-ultraviolet spectroheliograph using glancing incidence optics of Wolter's Type II to focus the sun's light on the entrance slit of a concave grating spectrometer; an auxiliary H-alpha system; two X-ray spectroheliographs using mechanical collimators for spatial resolution and Ross filters to isolate spectral bands of interest; and a flare polarimeter operating in the 15-40 keV X-ray region. The subsystems may be operated in a number of modes which, when combined with the spacecraft modes, give the instrument great flexibility for making solar observations. Representative results from each of the subsystems are presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Solar Physics; 35; Apr. 197
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Glancing incidence optics for X-ray and ultraviolet astronomy. (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Glancing incidence telescopes of the kind first described by Wolter have now been physically realized, so that it is possible to obtain high-resolution images of celestial objects at all wavelengths greater than about 3 A. The GSFC-MSFC X-ray telescope for the Apollo telescope mount uses Wolter type 1 optics and is capable of forming images of the sun in the 8-70 A region with spatial resolution of the order of one arc second. The GSFC extreme ultraviolet spectroheliometer for OSO H uses type 2 optics and can obtain images of the sun in spectral lines in the 170-400 A region with a spatial resolution of about ten arc seconds. Theoretical (ray trace) and laboratory data on these systems are presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: New techniques in space astronomy; Symposium; Aug 10, 1970 - Aug 14, 1970; Munich
    Format: text
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    NASA TECHNICAL REPORTS
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