Long-wavelength scattered-light halos in ASC CCDs

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

doi:10.1117/12.316832

9 July 1998 Long-wavelength scattered-light halos in ASC CCDs

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

Author Affiliations +

Proceedings Volume 3355, Optical Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.316832
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

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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, and John Yagelowicz "Long-wavelength scattered-light halos in ASC CCDs", Proc. SPIE 3355, Optical Astronomical Instrumentation, (9 July 1998); https://doi.org/10.1117/12.316832

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