28 July 1989 Glancing Incidence Vs. Multilayer Coated Normal Incidence Mirrors For Euv Telescopes
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Abstract
EUV telescopes are typically Wolter Type telescopes. Made with glancing incidence mirrors. Recent developments in miltilayer caotings have opened up the possiblitity of using normal incidence mirrors in a Cassegrain configuration for EUV telescopes. Each of these approaches has advantages and disadvantages. Glancing incidence mirrors have a higher reflectivity with a braod bandwidth, but the sufaces are dificult to make. Normal incidence mirrors are easier to fabricate to the necessary sufcae requirments, but require caotings with acceptable reflectivity only in a narrow bandpass. In this paper we will discuss the technical tradeoffs of using glancing incidence and normal incidence mirrors for EUV telescopes.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Geraldine Wright, Geraldine Wright, Ritva A.M. Keski-Kuha, Ritva A.M. Keski-Kuha, } "Glancing Incidence Vs. Multilayer Coated Normal Incidence Mirrors For Euv Telescopes", Proc. SPIE 1160, X-Ray/EUV Optics for Astronomy and Microscopy, (28 July 1989); doi: 10.1117/12.962653; https://doi.org/10.1117/12.962653
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