Optical/UV monitor telescope on the x-ray multimirror observatory

Details Optical/UV monitor telescope on the x-ray multimirror observatory Optical/UV monitor telescope on the x-ray multimirror observatory

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1945..152m&link_type=abstract

Proc. SPIE Vol. 1945, p. 152-163, Space Astronomical Telescopes and Instruments II, Pierre Y. Bely; James B. Breckinridge; Eds.

Astronomy and Astrophysics

Astronomy

Scientific paper

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 24(superscript th) magnitude star with a photon counting detector in a 1000 s observation using unfiltered light.

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