SODART Telescope on Spectrum-Rontgen and its Instrumentation
Abstract
SODART, the Soviet-Danish Roentgen Telescope, consists of two thin-foil, conical shell approximations to Wolter 1 geometry. The reflectors are rolled aluminum foils which have been dipped in acrylic lacquer and coated with gold, resulting in a super-smooth surface. Each telescope has an aperture of 60 cm, a focal length of 8 m, and a field of view of 1 deg, and is designed to have a halfpower width of not more than 2 arcmin. Focal plane slides can position one of four instruments at the focus of each telescope. Images and spectra will be recorded with position-sensitive proportional counters with spectral resolution as good as 13 percent at 6 keV. Spectral resolution of 2.5 percent at 6 keV is provided by an array of 19 cooled silicon detectors. A broadband polarimeter will be sensitive to residual polarization as low as 1 percent. An objective Bragg crystal panel, placed in front of one of the telescopes, will be capable of high-resolution spectroscopic studies of point and extended sources.
- Publication:
-
IAU Colloq. 123: Observatories in Earth Orbit and Beyond
- Pub Date:
- 1990
- DOI:
- 10.1007/978-94-011-3454-5_15
- Bibcode:
- 1990ASSL..166..119S
- Keywords:
-
- Gamma Ray Astronomy;
- Mission Planning;
- Soviet Satellites;
- Spaceborne Astronomy;
- Ultraviolet Astronomy;
- Extreme Ultraviolet Radiation;
- Focal Plane Devices;
- Gamma Ray Telescopes;
- Satellite-Borne Instruments;
- Astronomy