Selection of the Ground Segment for the Next Generation Space Telescope (NGST)

Details Selection of the Ground Segment for the Next Generation Space Telescope (NGST) Selection of the Ground Segment for the Next Generation Space Telescope (NGST)

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stin...0085882g&link_type=abstract

Technical Report, NASA Goddard Space Flight Center Greenbelt, MD United States

Computer Science

Sound

Telescopes, Cost Reduction, Costs, Deployment, Real Time Operation, Risk, Conferences, Temperature Effects, Telemetry, Stability

Scientific paper

The Next Generation Space Telescope (NGST) is a large aperture space telescope designated to succeed the Hubble Space Telescope (HST). NGST will continue the recent breakthroughs of HST in our understanding of the earliest origins of stars, galaxies and the elements that are the foundations of Life. It is expected that the costs of NGST should be kept within a fraction of those for HST. The ground segment has a goal of reducing the cost of NGST in comparison to HST by 50% to 75%. To mitigate risks for NGST a flight demonstrator called Nexus is planned for 2005. Nexus is a smaller scale telescope, which plans to test the deployment and optical stability of the telescope, the "Wave Front Control" process, and the thermal performance of the sunshield. The Nexus Ground System will be developed by GSFC and STSci, and the NGST Ground System will be developed by STSci. The authors of this paper are engaged in a study to evaluate and recommend selection of a Command and Telemetry system for each of these Ground Systems. This paper focuses on the process of selecting the real-time Command and Telemetry system for NGST. We would like to use the conference as a sounding board as we make a selection.

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