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  • INSTRUMENTATION AND PHOTOGRAPHY  (4)
  • SPACE SCIENCES  (2)
  • 1
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    Preliminary test data using the MOS DRO with Si:In detector material (1986)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: The initial testing performed on the Hughes Metal Oxide Semiconductor Direct Readout (MOS DRO) with a Si:In extrinsic infrared array is described. The testing to date was of a screening nature and the results are primarily qualitative rather than quantitative. At a later date the performance optimization phase will be initiated. An encouraging result is that this response is strongly dependent on the detector temperature, to the extent that thermal transients introduced during the chip readout will affect the performance. A responsivity of 1 A/W at 2.2 microns with a bias of 15 volts, which is well below what is optimum bias, was obtained.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Ames Research Center Proceedings of the Second Infrared Detector Technology Workshop; 12 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The Pioneer 10/11 and Helios A/B cosmic ray instruments (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: This paper describes the design and performance of a set of cosmic-ray particle experiments for the Pioneer 10/11 and Helios A/B space missions. These experiments had to be very light-weight, low-power and electronically sophisticated in order to meet the spacecraft and scientific requirements. Both sets of missions use several solid-state detector telescopes to measure protons from 100 KeV to 800 MeV and heavier ions up to Neon at 200 MeV per nucleon. Good performance is required for 7-8 years, and the system must tolerate large vibration loads and ionizing radiation doses up to 500,000 rads.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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  • 3
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    350-micron mapping of the Orion molecular cloud (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Keywords: SPACE SCIENCES
    Type: Astrophysical Journal; 191; July 1
    Format: text
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  • 4
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    The Helios A/B cosmic ray instrument /E 7/ (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: This paper describes the design and performance of a cosmic ray particle experiment for the Helios A/B space missions. This experiment had to be very lightweight, low power and electronically sophisticated in order to meet the spacecraft and scientific requirements, and very similar to those on the Pioneer 10 and 11 missions to Jupiter. Both sets of missions use several solid-state detector telescopes to measure protons from 100 KeV to 800 MeV per nucleon. Additionally, the Helios experiment includes a proportional counter to monitor the solar X-ray activity. The experiment has functioned quite well for 5 months in space, and large quantities of data are now being received.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Raumfahrtforschung; 19; Sept
    Format: text
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  • 5
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    An upper limit on the 4.9-micron flux from Titan. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Discussion of the limits on surface temperature (under 190 K) and reflectivity (under 0.5) corresponding to an upper limit set on the 4.9-micron flux from Titan. Special attention is given to the possibility of the presence of an opaque cloud layer or some gaseous absorber on Titan and to the subsequent implications.
    Keywords: SPACE SCIENCES
    Type: Astrophysical Journal; 183; July 1
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  • 6
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    Status of the NOAO evaluation of the Hughes 20x64 Si:As impurity band conduction array (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The Hughes 20 x 64 Si:As impurity band conduction arrays designed for ground-based and spaceborne astronomy observations is described together with experiments performed at NOAO to test these arrays. Special attention is given to the design and the characteristics of the test system and to the test methods. The initial tests on two columns of one array indicate that the array is easy to operate and performed satisfactorily.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Instrumentation in Astronomy VII; Feb 13, 1990 - Feb 17, 1990; Tucson, AZ; United States
    Format: text
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