The Transmission Grating Spectrometer Of Spektrosat

P. Predehl; W Burkert; B. Aschenbach; J. Triimper; M. Kiihne; P. Miiller

doi:10.1117/12.948722

21 December 1988 The Transmission Grating Spectrometer Of Spektrosat

P. Predehl, W Burkert, B. Aschenbach, J. Triimper, M. Kiihne, P. Miiller

Proceedings Volume 0982, X-Ray Instrumentation in Astronomy II; (1988) https://doi.org/10.1117/12.948722
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

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.

Citation Download Citation

P. Predehl, W Burkert, B. Aschenbach, J. Triimper, M. Kiihne, and P. Miiller "The Transmission Grating Spectrometer Of Spektrosat", Proc. SPIE 0982, X-Ray Instrumentation in Astronomy II, (21 December 1988); https://doi.org/10.1117/12.948722

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