1 November 1990 Calibration of the ROSAT High-Resolution Imager
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Abstract
The microchannel plate-based High Resolution Imager (HRI) is one of the focal plane instruments of the Rosat X-ray telescope that was launched on 1 June 1990. The calibration of the HRI is reported and preliminary results from the in-orbit calibration are presented. The quantum efficiency of the detector has been determined as a function of energy, the spatial variation of quantum efficiency, geometric nonlinearities, background, imaging performance, and UV sensitivity. Results of periodic tests of the temporal stability of the instrument are also reported.
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Martin V. Zombeck, Maureen A. Conroy, F. Rick Harnden, Adrian G. Roy, Heinrich W. Braeuninger, Wolfgang Burkert, Gunther Hasinger, Peter Predehl, "Calibration of the ROSAT High-Resolution Imager", Proc. SPIE 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy, (1 November 1990); doi: 10.1117/12.23255; https://doi.org/10.1117/12.23255
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KEYWORDS
Calibration

X-rays

Ultraviolet radiation

X-ray astronomy

Sensors

Quantum efficiency

Microchannel plates

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