Two normal incidence collimators designed for the calibration of the extreme ultraviolet explorerTwo 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.
Document ID
19890052944
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jelinsky, Sharon R. (California Univ. Berkeley, CA, United States)
Welsh, Barry (California Univ. Berkeley, CA, United States)
Jelinsky, Patrick (California, University Berkeley, United States)
Spiller, Eberhard (IBM Thomas J. Watson Research Center Yorktown Heights, NY, United States)