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Proceedings Paper

Fabrication Of MgF[sub]2[/sub] and LiF Windows For The Hubble Space Telescope Imaging Sprectrograph
Author(s): Daphne Gormley; Murk Bottema; Barbara Darnell; Walter Fowler; Walter Medenica
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Paper Abstract

Currently under fabrication at Optovac, Inc. are two prototype test windows (MgF2 and LiF) to be used on the 75 mm UV MAMA detector tubes for the Hubble Space Telescope Imaging Spectrograph (STIS). The spatial and optical constraints of this instrument dictate that the thickness of the window materials be no greater than 2 to 3 mm to achieve a minimum 50 percent transmission at Hydrogen Lyman alpha (121.6 nm), and that the window must be domed to minimize optical aberrations and provide structural strength. The detector window has an input diameter of about 100 mm with a radius-of-curvature of 70 mm. The manufacturing processes involved in the fabrication of these windows will be discussed, as well as test programs (optical and structural) to be performed at Goddard Space Flight Center (GSFC).

Paper Details

Date Published: 16 August 1988
PDF: 9 pages
Proc. SPIE 0932, Ultraviolet Technology II, (16 August 1988); doi: 10.1117/12.946885
Show Author Affiliations
Daphne Gormley, Stanford University (United States)
Murk Bottema, Ball Aerospace Systems Group (United States)
Barbara Darnell, Optovac, Inc. (United States)
Walter Fowler, NASA-Goddard Space Flight Center (United States)
Walter Medenica, NASA-Goddard Space Flight Center (United States)

Published in SPIE Proceedings Vol. 0932:
Ultraviolet Technology II
Robert E. Huffman, Editor(s)

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