Photometric stability of STIS MAMA detectors

Vic S. Argabright; Steven Franka; Peter Frank; George A. Lorman; Charles N. Van Houten; James Abraham; Richard L. Bybee; Charles L. Joseph; Bruce E. Woodgate; Randy A. Kimble; Anthony C. Danks

doi:10.1117/12.324540

28 August 1998 Photometric stability of STIS MAMA detectors

Vic S. Argabright, Steven Franka, Peter Frank, George A. Lorman, Charles N. Van Houten, James Abraham, Richard L. Bybee, Charles L. Joseph, Bruce E. Woodgate, Randy A. Kimble, Anthony C. Danks

Author Affiliations +

Proceedings Volume 3356, Space Telescopes and Instruments V; (1998) https://doi.org/10.1117/12.324540
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

Two multi-anode microchannel array (MAMA) detectors were fabricated at Ball Aerospace Technology Corporation for the Space Telescope Imaging Spectrograph (STIS) which was installed into the Hubble Space Telescope in February 1997. The photometric stability of the opaque CsI and semi- transparent Cs₂Te sealed MAMA tubes has been characterized as a function of operating voltage and illumination conditions. A total exposure of 5 by 10⁷ counts per pixel results in < 1 percent change in the detection quantum efficiency (DQE), which is attributed to conditioning of the microchannel plate (MCP) during tube processing. Employing good engineering practices to power supply design mitigates the effects of these components in long term detector stability. Other factors contributing to the photometric stability include the use of a curved channel MCP, photocathode processing, hydrocarbon free ultra high vacuum processing and sealed tube processing techniques. Contributions to the low resolution mode DQE stability are discussed along with empirical results on high resolution mode stability.

Citation Download Citation

Vic S. Argabright, Steven Franka, Peter Frank, George A. Lorman, Charles N. Van Houten, James Abraham, Richard L. Bybee, Charles L. Joseph, Bruce E. Woodgate, Randy A. Kimble, and Anthony C. Danks "Photometric stability of STIS MAMA detectors", Proc. SPIE 3356, Space Telescopes and Instruments V, (28 August 1998); https://doi.org/10.1117/12.324540

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