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Proceedings Paper

Optical monitor for x-ray satellites
Author(s): Elio Antonello; Oberto Citterio; Francesco Mazzoleni; Andrea Mariani; Paolo Pili; Pasquale Lombardi
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Paper Abstract

The Optical Monitor is a part of the JET-X experiment which will fly on board the Soviet satellite Spectrum-X-Gamma. The reflector is a Ritchey-Chretien with an aperture of 260 mm, and there are two frame transfer CCD detectors. The scientific objectives of the Optical Monitor are observations in the optical and UV bands simultaneously with X-ray, the real time identification of X-ray sources with mv less than or equal to 22 and detection of their variability, the improvement of the post-facto spacecraft attitude reconstruction for the X-ray observations, and the serendipitous mode search for microvariability of the bright stars to develop the research field of asteroseismology. Since long integration times are required for the faint object detection, a dedicated servo loop operating on the secondary mirror is developed for the stabilization of the images against the drift of the satellite.

Paper Details

Date Published: 1 July 1990
PDF: 11 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19151
Show Author Affiliations
Elio Antonello, Osservatorio Astronomico di Brera (Italy)
Oberto Citterio, Osservatorio Astronomico di Brera (Italy)
Francesco Mazzoleni, Osservatorio Astronomico di Brera (Italy)
Andrea Mariani, Officine Galileo SpA (Italy)
Paolo Pili, Officine Galileo SpA (Italy)
Pasquale Lombardi, Officine Galileo SpA (Italy)

Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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