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  • 1
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    Radio astronomy (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The activities of the Deep Space Network in support of radio astronomy operations during the first quarter of 1981 are reported. Results of the use of a low noise maser are presented, as well as updates in DSN support of experiments sanctioned by the Radio Astronomy Experiment Selection Panel.
    Keywords: ASTRONOMY
    Type: The Telecommun. and Data Acquisition Rept.; p 1-2
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Planetary radar (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The radar astronomy activities supported by the Deep Space Network during the first quarter of 1981 are reported. The bodies observed include the asteroids Apollo and Toro, comet Bradfield, and the rings of Saturn.
    Keywords: ASTRONOMY
    Type: The Telecommun. and Data Acquisition Rept.; p 226
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Radio Astronomy (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The activities of the DSN in support of Radio and Radar Astronomy Operations during September through December 1980 are described. Emphasis is on a report of an experiment selected for use of the DSN by the radio Astronomy Experiment Selection Panel: that of VLBI observations of the energetic galactic object SS-433.
    Keywords: ASTRONOMY
    Type: Telecommun. and Data Acquisition; p 1-2
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Planetary Radar (1983)
    In:  CASI
    Details
    Publication Date: 2014-09-12
    Description: The application of modern planetary radar techniques to a comet passing in close proximity to Earth is discussed. These techniques have the potential to determine the nature of cometary origins, structure, and internal dynamics. Moreover, the understanding gained could very likely negate or corroborate one of the prevailing hypotheses regarding the origin of the solar system: that comets are the remainder of the primordial out of which the planets coalesced approximately 4.5 billion years ago. In 1983, two unique opportunities were presented to observe a comet very near to Earth. The last such encounter was several centuries ago.
    Keywords: COMMUNICATIONS AND RADAR
    Type: The Telecommun. and Data Acquisition Rept.; p 114-115
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Radio Astronomy (1983)
    In:  CASI
    Details
    Publication Date: 2014-09-12
    Description: Deep Space Network (DSN) 26- and 64-meter antenna stations were utilized in support of Radio Astronomy Experiment Selection Panel experiments. Within a time span of 10 days, in May 1983 (267.75 hours total), nine RAES experiments were supported. Most of these experiments involved multifacility interferometry using Mark 3 data recording terminals and as many as six non-DSN observatories. Investigations of black holes, quasars, galaxies, and radio sources are discussed.
    Keywords: ASTRONOMY
    Type: The Telecommun. and Data Acquisition Rept.; p 112-113
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    NASA TECHNICAL REPORTS
  • 6
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    Radio astronomy (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Use of the Tidbinbilla Interferometer to refine the source positions in the Parkes 2.7 GHz survey of the southern sky is described. A result of the first phase of this work was the identification of a quasi-stellar object which appears to be the most remote object yet observed. This object has a red shift of 3.78 (PKS 2000-330, and a velocity of recession equal to 91% of that light. Based on Hubble's law, PKS 2000-330 appears to be 12 billion light years away.
    Keywords: ASTRONOMY
    Type: The Telecommun. and Data Acquisition Rept.; p 1-2
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    The Deep Space Network: An instrument for radio astronomy research (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The status of the use of Deep Space Network radio telescopes in conducting radio astronomy investigations is described. Present capabilities as well as future trends are discussed.
    Keywords: ASTRONOMY
    Type: NASA-CR-169323 , JPL-PUB-82-68 , NAS 1.26:169323
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    A dedicated 26-m SETI sky survey instrument facility: A feasibility study (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The feasibility of converting a deactivated GSTDN 26 m facility into a dedicated SETI Instrument Facility is examined. Additional benefits that would accrue from the proposed utilization of these facilities are the capability for remote and control the Deep Space Communications Complex (DSCC) Signal Processing Center, combined with a reduction in ground-induced radio frequency interference due to the physical distance to the other DSCC front end areas and the Signal Processing Center.
    Keywords: ASTRONOMY
    Type: The Telecommun. and Data Acquisiton Rept.; p 4-8
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    NASA TECHNICAL REPORTS
  • 9
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    Planetary radar (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The radar astronomy activities supported by the Deep Space Network during the third quarter of FY81 are reported. The planet Mercury was the principal object of interest.
    Keywords: COMMUNICATIONS AND RADAR
    Type: The Telecommun. and Data Acquisition Rept.; p 205
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    NASA TECHNICAL REPORTS
  • 10
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    Radio astronomy (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A K-band reflected-wave ruby maser was used on the 64-meter (DSS-43) antenna at the Tidbinbilla Tracking Station, near Canberra, Australia. Spectral line observations were carried out near 22 GHz for water vapor sources and near 24 GHz for ammonia sources. The water vapor observations were made in the direction of known southern OH and H2O maser sources. All of the previously detected water line sources examined were detected. In addition, two new water vapor maser sources were discovered, G301.1+1.1and G308.9+0.1. The spectrum of G301.0+1.1 is presented six ammonia sources were found: G291.3-0.7, G305.4+0.2, G322.2+0.6, G327.3-0.5, G333.6-0.2, and G268.4-0.8. Spectra of two of these sources, G291.3-0.7 (RCW 57) and G305.4+0.2, are presented. Both show clearly the presence of the quadrupole splitting satellite lines that will allow the determination of NH3 optical depths in these clouds.
    Keywords: ASTRONOMY
    Type: The Telecommun. and Data Acquisition Rept.; p 1-3
    Format: text
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    NASA TECHNICAL REPORTS
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