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Proceedings Paper

The Transmission Grating Spectrometer Of Spektrosat
Author(s): P. Predehl; W Burkert; B. Aschenbach; J. Triimper; M. Kiihne; P. Miiller
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Paper Abstract

The use of transmission gratings as dispersive elements in X-ray telescopes with an angular resolution in the arcsec range is preferable to the use of reflection gratings, as the transmission grating can be more easily incorporated into an existing telescope design. SPEKTROSAT, the follow-up mission to ROSAT will be equipped with a transmission grating spectrometer having a spectral resolution of 0.2 A over the wavelength range between 6 A and 200 A. Third order aberrations are minimized, since the gratings are mounted according to the Rowland-torus geometry. The ROSAT mirror system will be slightly changed in order to meet the spectroscopic requirements. The investigation of grating distortion effects which would reduce the theoretically achievable resolution has been started. Extensive efficiency measurements on different grating materials have been conducted.

Paper Details

Date Published: 21 December 1988
PDF: 8 pages
Proc. SPIE 0982, X-Ray Instrumentation in Astronomy II, (21 December 1988); doi: 10.1117/12.948722
Show Author Affiliations
P. Predehl, Max-Planck-Institut fur- Physik und Astrophysik (Germany)
W Burkert, Max-Planck-Institut fur- Physik und Astrophysik (Germany)
B. Aschenbach, Max-Planck-Institut fur- Physik und Astrophysik (Germany)
J. Triimper, Max-Planck-Institut fur- Physik und Astrophysik (Germany)
M. Kiihne, PTB Institut Berlin (Germany)
P. Miiller, PTB Institut Berlin (Germany)


Published in SPIE Proceedings Vol. 0982:
X-Ray Instrumentation in Astronomy II
Leon Golub, Editor(s)

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