Mission Overview

The automatic astronomical station (ASTRON) carried a UV telescope, X-ray spectrometer, and service systems. Its high apogee permitted the influences of the earth's radiation belts and Lyman-alpha radiation from the geocorona to be excluded from the measurements. Spectral recordings of stars, galaxies, and the night-sky background were made.

Launch Information

Launch Date: 1983-03-23 at 12:45:06 UTC
Launch Vehicle: Proton Booster Plus Upper Stage and Escape Stages
Launch Site: Tyuratam (Baikonur Cosmodrome), U.S.S.R

Trajectory Description
Type: Orbiter
Central Body: Earth
Epoch start: 1983-03-23 00:00:00 UTC

Orbital Parameters
Periapsis 2000.0 km
Apoapsis 200000.0 km
Period 5880.0 minutes
Inclination 51.5°
Eccentricity 0.9219340085983276

Instrumentation

Ultraviolet Telescope

This instrument consisted of a large ultraviolet telescope and a scanning photometer. The telescope had a diameter of 80 cm. The photometer covered the range of 1100 to 3500 A.

X-Ray Spectrometers

The X-ray spectrometer had a total area of 1780 sq cm and was composed of two detectors. Each detector consisted of 8 modules, had 10 pulse-height channels in the 2- to 25-keV band, and had a 3-deg (FWHM) field of view. Total-rate data were taken every 2.28 ms and pulse-height data were taken every 0.3 s.

Science

• DXS obtained the first-ever high resolution spectra of the diffuse soft X-ray background in the energy band from 0.15 to 0.28 keV (43-84 Å).

Summary