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Proceedings Paper

Long-wavelength scattered-light halos in ASC CCDs
Author(s): Marco Sirianni; Mark Clampin; George F. Hartig; Marc D. Rafal; Holland C. Ford; David A. Golimowski; C. Tremonti; Garth D. Illingworth; Morley M. Blouke; Michael P. Lesser; William Burmester; Randy A. Kimble; Pamela C. Sullivan; Carolyn A. Krebs; John Yagelowicz
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Paper Abstract

During the ground calibration of the Space Telescope Imaging Spectrograph (STIS) large scattered light haloes were identified in images of point sources and long slit spectral images at long wavelengths (greater than 750 nm). The long wavelength scattering was traced to the SITe 1024 X 1024 CCD and its header package, raising concerns for the performance of the Advanced Camera for Surveys (ACS) CCD detectors. ACS is a third generation axial instrument for the Hubble Space Telescope (HST) and will be installed during the 1999 Servicing Mission. Two of the ACS imaging channels employ SITe CCDs, so the ACS team have conducted a study of the long- wavelength scattering, in collaboration with SITe, to assess the impact to the ACS science program and develop a solution. In this paper we discuss our solution, its implementation on ACS CCDs, and describe the results of initial tests.

Paper Details

Date Published: 9 July 1998
PDF: 5 pages
Proc. SPIE 3355, Optical Astronomical Instrumentation, (9 July 1998); doi: 10.1117/12.316832
Show Author Affiliations
Marco Sirianni, Johns Hopkins Univ. and Univ. degli Studi di Padova (United States)
Mark Clampin, Space Telescope Science Institute (United States)
George F. Hartig, Space Telescope Science Institute (United States)
Marc D. Rafal, Space Telescope Science Institute (United States)
Holland C. Ford, Johns Hopkins Univ. (United States)
David A. Golimowski, Johns Hopkins Univ. (United States)
C. Tremonti, Johns Hopkins Univ. (United States)
Garth D. Illingworth, UCO/Lick Observatory (United States)
Morley M. Blouke, Scientific Imaging Technology, Inc. (United States)
Michael P. Lesser, Steward Observatory/Univ. of Arizona (United States)
William Burmester, Ball Aerospace & Technologies Corp. (United States)
Randy A. Kimble, NASA Goddard Space Flight Ctr. (United States)
Pamela C. Sullivan, NASA Goddard Space Flight Ctr. (United States)
Carolyn A. Krebs, NASA Goddard Space Flight Ctr. (United States)
John Yagelowicz, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 3355:
Optical Astronomical Instrumentation
Sandro D'Odorico, Editor(s)

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