21 December 1988 Two Normal Incidence Collimators Designed For The Calibration Of The Extreme Ultraviolet Explorer
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Abstract
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.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sharon R. Jelinsky, Barry Welsh, Patrick Jelinsky, Eberhard Spiller, "Two Normal Incidence Collimators Designed For The Calibration Of The Extreme Ultraviolet Explorer", Proc. SPIE 0982, X-Ray Instrumentation in Astronomy II, (21 December 1988); doi: 10.1117/12.948736; https://doi.org/10.1117/12.948736
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