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  • INSTRUMENTATION AND PHOTOGRAPHY  (478)
  • ASTROPHYSICS
  • 1970-1974  (519)
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  • 1
    Publication Date: 2019-07-13
    Description: A sensitive carbon monoxide detector, developed specifically for spacecraft use, is described. An instrument range of 0 to 60 ppm CO in air was devised. The fuel cell type detector is used as a highly sensitive electrolysis cell for electrochemically detecting gases. The concept of an electrochemical CO detector is discussed and the CO oxidation behavior in phosphoric and sulfuric acid electrolytes is reported.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-120171
    Format: application/pdf
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  • 2
    Publication Date: 2019-06-27
    Description: Evaluation of high altitude balloon aerial photography for earth resources and oceanography including photographic formats and camera systems and packaging
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-X-2208 , L-7436
    Format: application/pdf
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  • 3
    Publication Date: 2019-07-13
    Description: Standard thermoelectric data have been determined for four thermocouple combinations used below the ice point: commercial types E, K, and T and the special combination of KP vs Au-0.07 at.% Fe. Power series coefficients necessary to generate E = f(T) data for these combinations are given. In addition, extensive tests were carried out to ascertain the variability between materials from different manufacturers. Typical wires processed for low-temperature usage often have slightly thermoelectric properties (up to 1%) from those, nominally identical, wires made for high-temperature applications. Generally, type E is the most satisfactory standardized commercial combination. The Au-0.07 at.% Fe material has been examined in particular detail, because it is not yet an ISA standard material. It has excellent sensitivity in the liquid helium/liquid hydrogen temperature range and a nearly linear thermovoltage at higher temperatures.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Symposium on Temperature; Jun 21, 1971 - Jun 24, 1971; Washington, DC
    Format: text
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  • 4
    Publication Date: 2019-07-13
    Description: Using a color-television display system and interactive graphics equipment on-line to an IBM 360/44 computer, investigators at the Manned Spacecraft Center have developed a variety of interactive displays which aid in analyzing remote sensor data. This paper describes how such interactive displays are used to: (1) analyze data from a multispectral scanner, (2) develop automatic pattern recognition systems based on multispectral scanner measurements, and (3) analyze data from nonimaging sensors such as the infrared radiometer and microwave scatterometer.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: International Symposium on Remote Sensing of Environment, 7th, University of Michigan; May 17, 1971 - May 21, 1971; Ann Arbor, MI
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  • 5
    Publication Date: 2019-07-13
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Symposium on Temperature; Jun 21, 1971 - Jun 24, 1971; Washington, DC
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  • 6
    Publication Date: 2019-06-27
    Description: A feasibility model of an all-electronic bubble memory system has been constructed. It uses a small 60k bit bubble recorder consisting of 6 chips of 10k bits each mounted in three separate packages operating as a FIFO at a 150 KHz bubble data rate. In addition to serving as a direct tape recorder replacement, the bubble recorder can be programmed for random access to each individual chip for ranom block access operation or for self-checking or by-passing any malfunctioning memory chip. Read and write operations can be performed asynchronously from very low frequency up to basic recording field frequency. A large 50M bit prototype is planned.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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  • 7
    Publication Date: 2019-08-13
    Description: The balloon flight prototype or a cosmic ray superconducting magnet experiment designed for operation on the Space Shuttle is described. The physical and operating parameters of the scintillation, Cerenkov, emulsion and multiwire proportional counters used in the system for charge and rigidity measurements is given as well as the on-board data handling procedures.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: International Cosmic Ray Conference; Aug 17, 1973 - Aug 30, 1973; Denver, CO
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  • 8
    Publication Date: 2019-08-13
    Description: Resolution tests of multiwire proportional counter delay line readout systems are reported. The system is being developed at NASA/JSC for use in a large balloon borne magnet spectrometer. The system is ultimately intended for use in Space Shuttle missions. Tests of two different types of delay line and associated electronics carried out in minimum ionizing particle beams (accelerator and sea level cosmic ray) are reported. Resolution performance is shown to be strongly dependent on type of gas mixture and in the case of inclined events upon the propagation velocity of the delay line. The resolution performance achieved for magic gas chamber filling (100 um at normal incidence) is far superior to any other state of the art technique capable of being applied to large geometry factor systems.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: International Cosmic Ray Conference; Aug 17, 1973 - Aug 30, 1973; Denver, CO
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  • 9
    Publication Date: 2005-11-30
    Description: Photographic observations of astronomical interest conducted during the Apollo 15 mission are discussed. Procedures used in photographing the solar corona are described together with calibration and reduction methods. In addition, selected preliminary results obtained from the photography are presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Its Apollo 15 Prelim. Sci. Rept.; 39 p
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  • 10
    Publication Date: 2005-11-30
    Description: During Gemini missions, the image orthicon system was used to obtain photographic data on faint and diffuse astronomical phenomena. Results show that the photographs may be used to determine the airglow geometry. Although it was sensitive, the original photographic system was unsuitable for use in the study of dim and diffuse astronomical light sources.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: The Gemini Program: Phys. Sci. Expt. Sum.; p 445-454
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