Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988spie..932..139g&link_type=abstract
IN: Ultraviolet technology II; Proceedings of the Meeting, Orlando, FL, Apr. 4, 5, 1988 (A89-29476 11-19). Bellingham, WA, Socie
Astronomy and Astrophysics
Astronomy
Hubble Space Telescope, Lithium Fluorides, Magnesium Fluorides, Ultraviolet Astronomy, Ultraviolet Detectors, Windows, Dynamic Tests, Fabrication, Imaging Spectrometers, Prototypes, Spaceborne Astronomy, Surface Roughness, Ultraviolet Spectrometers
Scientific paper
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 are described. The spatial and optical constraints of this instrument dictate that the thickness of the window materials be no greater than 2-3 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 is discussed, as well as test programs (optical and structural) to be performed at Goddard Space Flight Center.
Bottema Murk
Darnell Barbara
Fowler Walter
Gormley Daphne
Medenica Walter
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