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Proceedings Paper

UVOT bright source safing system
Author(s): Barry K. Hancock; Hajime Kawakami
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Paper Abstract

The Swift mission requires that the Swift UV optical telescope (UVOT) have the autonomous functionality to protect itself against the potentially damaging effects of observing bright sources. This capability had to be added to an existing heritage camera design, which was used for the Optical Monitor telescope (OM) on ESA's XMM-Newton spacecraft. The solution used a two part mechanism employing data from a catalogue of known bright sources, and a real-time system for monitoring the raw pixel data from the camera and automatically reducing the detector gain when a signal above a programmed threshold is seen. This discussion will describe the resulting Field Programmable Gate Array (FPGA) based implementation that sits alongside the heritage camera and processing electronics and can be programmed and monitored by the UVOT instrument controller.

Paper Details

Date Published: 3 February 2004
PDF: 11 pages
Proc. SPIE 5165, X-Ray and Gamma-Ray Instrumentation for Astronomy XIII, (3 February 2004); doi: 10.1117/12.505674
Show Author Affiliations
Barry K. Hancock, Univ. College London (United Kingdom)
Hajime Kawakami, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 5165:
X-Ray and Gamma-Ray Instrumentation for Astronomy XIII
Kathryn A. Flanagan; Oswald H. W. Siegmund, Editor(s)

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