Physics – Optics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2011..310m&link_type=abstract
Proc. SPIE Vol. 2011, p. 310-321, Multilayer and Grazing Incidence X-Ray/EUV Optics II, Richard B. Hoover; Arthur B. Walker; Eds
Physics
Optics
6
Scientific paper
The optics of a Dall-Kirkham telescope and a Rowland grating have been coated with ion- beam-sputtered SiC in the 2-m mirror coating facility at Goddard Space Flight Center with a newly acquired deposition system. During the deposition system test runs we verified two optical properties of thin SiC films that had been suggested from calculations: (1) the visible reflectivity is sensitive to the thickness of the SiC layer and (2) a substrate of Al (as opposed to glass) improves the visible reflectivity of the coatings. In addition, we found the slow decay in the far-UV reflectivity exhibited by ion-beam-sputtered SiC coatings stored in a desiccator could be significantly retarded by storage in vacuum. We present the far-UV effective area of the telescope and spectrometer that we plan to fly on NASA sounding rocket 36.109UG in September 1993.
Feldman Paul D.
Gum Jeffrey S.
Keski-Kuha Ritva A.
Martinez Mel E.
McCandliss Stephan R.
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