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Proceedings Paper

The Constellation-X reflection grating spectrometer
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Paper Abstract

The Constellation-X Reflection Grating Spectrometer (RGS) is designed to provide high-throughput, high-resolution spectra in the long wavelength band of 6 to 50 angstrom. In the nominal design an array of reflection gratings is mounted at the exit of the Spectroscopy X-ray Telescope (SXT) mirror module. The gratings intercept and disperse light to a designated array of CCD detectors. To achieve the throughput (Aeff > 1000 cm2 below 0.6 keV) and resolution (Δλ/λ > 300 below 0.6 keV) requirements for the instrument we are investigating two possible grating designs. The first design uses in-plane gratings in a classical configuration that is very similar to the XMM-Newton RGS. The second design uses off-plane gratings in a conical configuration. The off-plane design has the advantage of providing higher reflectivity and potentially, a higher spectral resolution than the in-plane configuration. In our presentation we will describe the performance requirements and the current status of the technology development.

Paper Details

Date Published: 13 June 2006
PDF: 8 pages
Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 62661X (13 June 2006); doi: 10.1117/12.672227
Show Author Affiliations
Jean Cottam, NASA Goddard Space Flight Ctr. (United States)
Webster Cash, Univ. of Colorado (United States)
Kathryn A. Flanagan, MIT Kavli Institute for Astrophysics and Space Research (United States)
Ralf K. Heilmann, MIT Kavli Institute for Astrophysics and Space Research (United States)
Gregory Y. Prigozhin, MIT Kavli Institute for Astrophysics and Space Research (United States)
Andrew P. Rasmussen, Stanford Univ. (United States)
George R. Ricker, MIT Kavli Institute for Astrophysics and Space Research (United States)
Mark L. Schattenburg, MIT Kavli Institute for Astrophysics and Space Research (United States)
Eric Schindhelm, Univ. of Colorado (United States)


Published in SPIE Proceedings Vol. 6266:
Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
Martin J. L. Turner; Günther Hasinger, Editor(s)

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