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  • 1
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    Why image Uranus (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Ratio picture techniques which enhance color or polarization contrasts are proposed for Uranus imagery on the MJU79 mission. Currently available low-resolution pictures of Uranus are assessed, and specific objectives of the fly-by are described, including exploratory imaging, measurement of fundamental properties (rotation period, rotation axis orientation, diameter), and examination of atmospheric properties. An attempt is made to predict the aspect of Uranus from current knowledge about its atmosphere. It is proposed that the imaging system should emphasize photo-polarimetric observations between 5500 and 10,000 A if the planet alone is to be imaged, or it should be a high-resolution system based on the MJS one if the satellites will also be imaged. Performance of a possible high-resolution system at Uranus is assessed.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Icarus; 24; Mar. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Planetary spacecraft as optical instrument platforms (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The pointing system, telemetry rate, thermal control, power, command, and available mass of planetary spacecraft are described. A comparison of the pointing and stability capabilities of the three-axis stabilized spacecraft and the spin stabilized spacecraft is presented. The development of a hybrid spacecraft, which combines the spin and three-axis design, is examined. The attitude control and articulation system, and the instruments of the Galileo, a hybrid spacecraft, are analyzed.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
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    NASA TECHNICAL REPORTS
  • 3
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    Infrared radiometer for the Pioneer Venus orbiter. I - Instrument description (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: A ten-channel IR radiometer for the Pioneer Venus orbiter is described. The experimental techniques used and the design of the instrumentation by which they were implemented are considered. Emphasis is placed on temperature sounding, limb sounding, limb darkening, zenith scanning, cloud top temperature, spectral albedo and water vapor measurements. Instrumentation description is also given including optics, detectors, and electronics. Attention is given to data acquisition and handling, calibration, and in-flight performance.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Applied Optics; 18; Dec. 1
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    NASA TECHNICAL REPORTS
  • 4
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    A large imaging array CCD program (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Test results on charge coupled device (CCD) imaging arrays (100 x 160 pixel and 400 x 400 pixel) employed as imaging detectors are reported, along with expected low light level (LLL) performance. Reasons for selection of a thinned backside-illuminated buried-channel three-phase CCD variant are indicated. The LLL performance and long storage time capability of the CCD imaging array recommend it for stellar photometry, detection and tracking of faint objects, and other astronomical applications.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Seminar on Low light level devices for science and technology; Mar 22, 1976 - Mar 23, 1976; Reston, VA
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    NASA TECHNICAL REPORTS
  • 5
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    Spacecraft imaging of planets - Camera systems from Mariner to Space Telescope (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The purpose of the study is to illustrate how imaging has been used to successfully explore the planets scientifically. The scientific, technological, and systems background for imaging instruments on Mariner, Viking, and Voyager are briefly reviewed, along with the scientific data return. Attention is also given to the present imaging systems on Galileo and the Space Telescope. A comparison of all these imaging systems is included, together with an assessment of their actual or projected science return.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: International Geoscience and Remote Sensing Symposium; Jun 08, 1981 - Jun 10, 1981; Washington, DC
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    NASA TECHNICAL REPORTS
  • 6
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    Optics for future solar system exploration (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The optics technology necessary for future solar system exploration is discussed. To satisfy the various mission objectives, optical components need to be of low weight, provide adequate spatial resolution and mapping coverage, provide necessary spectral resolution, provide means to perform adaptable mapping spectrometry, operate under low light levels, provide color images of high fidelity and operate under high temperatures. Future near-infrared mapping spectrometers are examined, and the use of focal-plane detectors to improve their sensitivity is discussed.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Seminar on Optics to the year 2000; Sep 30, 1980; Huntsville, AL
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    NASA TECHNICAL REPORTS
  • 7
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    OGO-E plasma spectrometer. (1967)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: OGO-E plasma spectrometers for measuring total flux below 12 kev and energy /spectral density/ of plasma
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NSSDC-ID-68-014A-17-PM , NATIONAL AEROSPACE INSTRUMENTATION SYMPOSIUM; Jun 13, 1967 - Jun 16, 1967; SAN DIEGO, CA
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    NASA TECHNICAL REPORTS
  • 8
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    The MVM imaging system and its spacecraft interactions (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The present work describes the main considerations and steps taken in determining the functional design of the imaging system of the Mariner Venus/Mercury (MVM) spacecraft and gives examples of some of the interactions between the spacecraft and the imaging instrument during the design and testing phases. Stringent cost and scheduling constraints dictated the use of the previous Mariner 9 dual-camera TV system. The TV parameters laid the groundwork for the imaging definition. Based on the flyby distances from Venus and Mercury and the goal of surface resolution better than 500 meters per sample pair, calculation was performed on focal length, format size, planetary coverage, and data rates. Some problems encountered in initial mechanical operation and as a result of spacecraft drift during the mission are also discussed.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Effective systems integration and optical design; Seminar; Aug 21, 1974 - Aug 23, 1974; San Diego, CA
    Format: text
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    NASA TECHNICAL REPORTS
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