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1 November 1993 Optical/UV monitor telescope on the x-ray multimirror observatory
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The Optical/UV Monitor Telescope (XMM-OM) on the ESA X-ray Cornerstone mission XMM is designed to provide simultaneous optical and UV coverage of all sources viewed by the observatory in the X-ray band. The instrument consists of a 30 cm Ritchey-Chretien telescope. This feeds a compact photon counting detector that operates in the blue part of the optical spectrum and the UV (1600 - 5500 angstroms), and simultaneously a cooled CCD detector which registers the red light (5500 - 10000 angstroms). The XMM-OM will have a field of view of approximately 25 arcmin diameter, matching that of the X-ray cameras on XMM, and a spatial pixel size in normal operation of 1 arcsec in the blue, and about 1.8 arcsec in the red. Because of the low sky background in space, the sensitivity of the XMM- OM for detecting stars will be comparable to that of a 4-m telescope at the Earth's surface, and it should detect a B equals 24th magnitude star with a photon counting detector in a 1000 s observation using unfiltered light.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Keith O. Mason, Mark S. Cropper, John L. A. Fordham, France Anne Cordova, David T. Leisawitz, David H. Lumb, Cheng Ho, Elio Antonello, and Claude A. J. Jamar "Optical/UV monitor telescope on the x-ray multimirror observatory", Proc. SPIE 1945, Space Astronomical Telescopes and Instruments II, (1 November 1993);


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