Computer Science – Performance
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20712501b&link_type=abstract
American Astronomical Society Meeting 207, #125.01; Bulletin of the American Astronomical Society, Vol. 37, p.1369
Computer Science
Performance
Scientific paper
Wide Field Camera 3 (WFC3) is a facility instrument intended for installation on HST during the next servicing mission. The camera is comprised of two channels (UVIS and IR); each channel has its own set of filters. The UVIS side contains 48 elements (42 filters, 5 quads, and 1 UV grism) while the IR side contains 17 elements (15 filters and 2 grisms). During ground testing, the majority of the UVIS filters were found to exhibit excellent performance consistent with or exceeding expectations; however, a subset of filters showed filter ghosting. Improved replacement filters have been procured; not only have the filter ghosts been reduced but in many cases, the newer technology provided higher filter throughputs. No filter ghosting was detected in the IR channel elements; however, due to the significantly improved response blueward of 800nm expected in the new substrate-removed IR detector, two IR filters originally constructed on a fused silica substrate are being remade using an IR-transmitting color glass to block any visible light transmission. This poster summarizes the characterization tests performed on the replacement WFC3 UVIS and IR filters.
Arsenovic Petar
Baggett Sylvia
Boucarut Ray
Brown Tim
Dailey Matthew
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