Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1343..530a&link_type=abstract
IN: X-ray/EUV optics for astronomy, microscopy, polarimetry, and projection lithography; Proceedings of the Meeting, San Diego,
Astronomy and Astrophysics
Astronomy
Diffraction Patterns, Mirrors, Spectrometers, X Ray Diffraction, X Ray Telescopes, Charge Coupled Devices, Design Analysis, Rowland Circles, X Ray Astronomy
Scientific paper
The Reflection Grating Spectrometer Experiment which has been selected for flight on the European Space Agency's X-Ray Multi-Mirror Mission includes two arrays of reflection gratings that are placed in the X-ray optical path behind two separate grazing incidence X-ray telescopes. Each of the grating arrays picks off roughly half the X-ray light emanating from its telescope and diffracts it to a dedicated strip of charge-coupled device detectors offset from the telescope focal plane. The arrays contain 224 100 x 200 mm gratings, each mounted at a graze angle of 1.58 deg to the incident beam. The gratings are produced by epoxy replication of a common master onto very thin substrates. Both the gratings and the detectors are mounted on a Rowland circle which also includes the telescope focus. The current state of both the engineering and the optical designs for the grating arrays is reviewed.
Atkinson Dennis P.
Bixler Jay V.
Geraghty C. J.
Hailey Charles J.
Kahn Steve M.
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