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  • INSTRUMENTATION AND PHOTOGRAPHY  (36)
  • SPACE RADIATION  (25)
  • 1970-1974  (61)
  • 1
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    Absolute radiometry in space astronomy (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Precision radiometric and spectrometric intensity measurements for calibration of space telescopes
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA, WASHINGTON OPT. TELESCOPE TECHNOL. 1970; P 775-780
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  • 2
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    Ultraviolet spectrometer experiment (1973)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: The ultraviolet spectrometer (UVS) onboard the Apollo 17 orbiting spacecraft was used to measure emissions from the lunar atmosphere. The UVS and calibration are discussed along with the lunar atmosphere observations and lunar albedo measurements.
    Keywords: SPACE RADIATION
    Type: NASA. Johnson Space Center Apollo 17 Prelimin. Sci. Rept.; 10 p
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  • 3
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    Photoelectron excitation of N2 in the day airglow (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Nitrogen photoelectron excitation in dayglow, examining 3371 A band intensity, energy spectrum and flux in ionosphere
    Keywords: SPACE RADIATION
    Type: ; TROPHYSICAL JOURNAL
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  • 4
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    Special report, exit slit mirrors for the Ebert spectrometer (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The use of a very long straight entrance slit in an Ebert grating spectrometer with two plane mirrors at the shorter exit slit to increase the energy density is described. This system has been employed in a far ultraviolet rocket spectrometer to provide higher sensitivity than has been achieved previously. The imaging properties and required slit and mirror adjustments are presented. Experimental results are included.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-128549 , T72-19300
    Format: application/pdf
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  • 5
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    Anisotropies in the interplanetary intensity of solar protons with energies greater than 0.3 MeV. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: By using Explorer 35 interplanetary observations of solar protons with energies greater than 0.3 MeV during ten selected solar events (1967-1970) the tine dependence of intensity and of the angular distribution of intensity has been studied for the first time in the sub-MeV range of energy. The respective contributions of diffusive and convective transport are resolved. Results are qualitatively similar to those of McCracken et al. (1968, 1971) in the energy range from 7.5to 45 MeV; but, as was expected, convective transport is found to be relatively more important at the lower energies. The convective component of the anisotropy vector yields values of the solar wind velocity in good agreement with directly measured values.
    Keywords: SPACE RADIATION
    Type: AD-759099 , Journal of Geophysical Research; 78; Mar. 1
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  • 6
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    Two-dimensional area scanning with image dissectors. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: An image dissector system for direct two-dimensional area scanning has been fabricated and is briefly described. Examples of application to direct scanning and digitization of photographic images are given.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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  • 7
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    Tilting-filter measurements in dayglow rocket photometry. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: A rocket-borne photometer containing two tilting-filter channels for the measurement of the forbidden OI 6300-A and 5577-A emission lines in the day airglow is described. The results of one flight substantiate the employment of tilting filters to determine accurate corrections for background continuum and provide reliable height profiles of emission intensity down to approximately 90 km. Discussions on the calibration of the instrument and its baffling against sunlight are also presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Applied Optics; 11; Oct. 197
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  • 8
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    Rocket flight performance of a preprototype Apollo 17 UV spectrometer S-169 (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The design, construction, testing, calibration, flight performance and flight data of an Ebert ultraviolet spectrometer are described which is an accurate representation of the conceptual design of the Apollo 17 UV spectrometer. The instrument was flown in an Aerobee 350 rocket from Wallops Island, Va., at 7:10 p.m. EDT on June 10, 1971 to an altitude of 328 km with a solar elevation angle of about 11 deg.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-115469
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  • 9
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    Fluorescence of molecular hydrogen excited by solar extreme-ultraviolet radiation (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: During trans-earth coast, the Apollo 17 ultraviolet spectrometer was scheduled to make observations of the far ultraviolet background in selected regions of the sky. In the course of one of these observations, the spacecraft fuel cells were routinely purged of excess hydrogen and water vapor. The ultraviolet fluorescence spectrum of the purged molecular hydrogen excited by solar extreme ultraviolet radiation is interpreted by absorption of solar L-beta and L-gamma radiation in the nearly resonant (6, 0) and (11, 0) Lyman bands. The results are deemed significant for ultraviolet spectroscopic investigations of the atmospheres of the moon and planets since Lyman-band fluorescence provides an unambiguous means of identification of molecular hydrogen in upper atmospheres.
    Keywords: SPACE RADIATION
    Type: Astrophysical Journal; 185; Oct. 15
    Format: text
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  • 10
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    Anisotropies in the interplanetary intensity of solar protons E sub p 0.3 MeV (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: From the data on solar protons with energy 0.3 MeV obtained by Explorer 35 since July 1967, ten events were selected for the study of intensity vs time and of angular distributions of intensity in interplanetary space near the earth. The bases of selection were that the events be of adequate intensity for statistically satisfactory study and that they be attributable to a single solar flare so that their time histories were not complicated by overlapping emissions of particles. The principal findings for these events are presented.
    Keywords: SPACE RADIATION
    Type: NASA-CR-127425 , U-OF-IOWA-72-15
    Format: application/pdf
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