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Proceedings Article

The Constellation-X reflection grating spectrometer

[+] Author Affiliations
Jean Cottam

NASA Goddard Space Flight Ctr.

Webster Cash, Eric Schindhelm

Univ. of Colorado

Kathryn A. Flanagan, Ralf K. Heilmann, Gregory Y. Prigozhin, George R. Ricker, Mark L. Schattenburg

MIT Kavli Institute for Astrophysics and Space Research

Andrew P. Rasmussen

Stanford Univ.

Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 62661X (June 13, 2006); doi:10.1117/12.672227
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From Conference Volume 6266

  • Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
  • Martin J. L. Turner; Günther Hasinger
  • Orlando, Florida , USA | May 24, 2006

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.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jean Cottam ; Webster Cash ; Kathryn A. Flanagan ; Ralf K. Heilmann ; Gregory Y. Prigozhin, et al.
"The Constellation-X reflection grating spectrometer", Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 62661X (June 13, 2006); doi:10.1117/12.672227; http://dx.doi.org/10.1117/12.672227


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