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Proceedings Paper

Calibration of the AXAF-HRC UV/ion shields at the Osservatorio Astronomico di Palermo G.S. Vaiana: IV - UV rejection measurements
Author(s): Marco Barbera; Alfonso Collura; Alessandro Dara; Salvatore Serio; Martin V. Zombeck
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Paper Abstract

The AXAF-HRC UV/ion shields have to provide high UV rejection from diffuse background and bright UV sources (e.g. rejection greater than 107 at wavelength longer than approximately 300 angstrom for the HRC-I). In the framework of the AXAF-HRC calibration program we have conducted UV (300 - 2500 angstrom) and FUV/visible (1900 - 10,000 angstrom) transmission measurements on the baseline design UV/ion shields based on Lexan and aluminum. The results of these measurements, here reported, have shown that the baseline design UV/ion shields did not meet the scientific requirements of UV opacity and as a consequence, the UV/ion shields were redesigned. UV tests of new UV/ion shields, based on new materials, is in progress.

Paper Details

Date Published: 31 October 1996
PDF: 12 pages
Proc. SPIE 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII, (31 October 1996); doi: 10.1117/12.255987
Show Author Affiliations
Marco Barbera, Istituto e Osservatorio Astronomico G. S. Vaiana (Italy)
Alfonso Collura, Istituto per le Applicazioni Interdisciplinari della Fisica and Istituto e Osservatorio Ga (Italy)
Alessandro Dara, Istituto e Osservatorio Astronomico G.S. Vaiana (Italy)
Salvatore Serio, Istituto e Osservatorio Astronomico G.S. Vaiana (Italy)
Martin V. Zombeck, Smithsonian Astrophysical Observatory (United States)


Published in SPIE Proceedings Vol. 2808:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII
Oswald H. W. Siegmund; Mark A. Gummin, Editor(s)

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