Two normal incidence collimators designed for the calibration of the extreme ultraviolet explorer

Details Two normal incidence collimators designed for the calibration of the extreme ultraviolet explorer Two normal incidence collimators designed for the calibration of the extreme ultraviolet explorer

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988spie..982..387j&link_type=abstract

IN: X-ray instrumentation in astronomy II; Proceedings of the Meeting, San Diego, CA, Aug. 15-17, 1988 (A89-40276 17-35). Bellin

Astronomy and Astrophysics

Astronomy

1

Collimators, Extreme Ultraviolet Explorer Satellite, Mirrors, Calibrating, Incidence, Reflectance

Scientific paper

Two Dall-Kirkham, normal incidence collimators have been designed to calibrate the imaging properties of the Extreme Ultraviolet Explorer over the wavelength region from 114 to 2000 A. The mirrors of the short-wavelength, 25-cm diameter collimator are superpolished Zerodur which have been multilayer coated for optimal reflectivity at 114 A. The mirrors of the long-wavelength, 41.25-cm diameter collimator are gold coated Zerodur for high reflectance above 300 A. The design, performance, and future use of these collimators in the extreme ultra-violet is discussed.

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