Glancing Incidence Vs. Multilayer Coated Normal Incidence Mirrors For Euv Telescopes

Geraldine Wright; Ritva A.M. Keski-Kuha

doi:10.1117/12.962653

28 July 1989 Glancing Incidence Vs. Multilayer Coated Normal Incidence Mirrors For Euv Telescopes

Geraldine Wright, Ritva A.M. Keski-Kuha

Proceedings Volume 1160, X-Ray/EUV Optics for Astronomy and Microscopy; (1989) https://doi.org/10.1117/12.962653
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

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.

Citation Download Citation

Geraldine Wright and 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); https://doi.org/10.1117/12.962653

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