Optical Monitor for X-ray satellites

Details Optical Monitor for X-ray satellites Optical Monitor for X-ray satellites

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1235..867a&link_type=abstract

IN: Instrumentation in astronomy VII; Proceedings of the Meeting, Tucson, AZ, Feb. 13-17, 1990 (A91-29601 11-35). Bellingham, WA

Physics

Optics

1

Cassegrain Optics, Optical Equipment, Satellite-Borne Instruments, Soviet Satellites, X Ray Astronomy, Charge Coupled Devices, Cosmic Rays, Image Motion Compensation, Temperature Control, Ultraviolet Radiation

Scientific paper

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.

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