Constellation-X Spectroscopy X-ray Telescope requirements and development program: MSFC research program

Details Constellation-X Spectroscopy X-ray Telescope requirements and development program: MSFC research program Constellation-X Spectroscopy X-ray Telescope requirements and development program: MSFC research program

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3765...73o&link_type=abstract

Proc. SPIE Vol. 3765, p. 73-81, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X, Oswald H. Siegmund; Kathryn A. Flanag

Astronomy and Astrophysics

Astronomy

Scientific paper

The Constellation-X Spectroscopy X-ray Telescope (SXT) will provide high-throughput, high-resolution spectroscopy of cosmic sources, form 0.25 keV to 10 keV. Key to this capability is the development of large, lightweight optics for the SXT mirror assembly. Teams led by NASA's Marshall Space Flight Center (MSFC), by NASA's Goddard Space Flight Center (GSFC), and by Italy's Osservatorio Astronomico di Brera are currently developing competing mirror technologies for this planned mission. Each team is making significant research progress in developing mirror technologies which satisfy the SXT requirements for lightweight optics, consistent with a system-level optical performance of better than 15 arcsec half-power diameter. The NASA MSFC, in collaboration with the Smithsonian Astrophysical Observatory, has focused its efforts on full-shell replicated optics, of electroformed nickel alloys. Recent progress in identifying a surface treatment to effect low, controlled adhesion and, more significantly, in developing new high-strength nickel alloys make this a viable, low-cost approach to satisfying the SXT requirements.

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