Apollo-Soyuz Test Project

Apollo-Soyuz docking


* Mission Overview

The Apollo-Soyuz mission occurred in July, 1975. In addition to the manned mission objectives of international space cooperation, testing universal docking systems, etc., Apollo-Soyuz carried a number of scientific instruments.

* Instrumentation

The U.S. portion of the mission carried a proportional counter system sensitive to 0.18-0.28 and 0.6-10.0 keV X-rays. The total effective area was 0.1 sq-m, and there was a 4.5 degree FWHM circular field of view.

* Science

Results from this experiment included the discovery of soft X-ray emission from the supernova remnant MSH 14-63 and of rapid pulsations (0.716 s) from the binary SMC X-1. Due to the (comparatively) short duration of the Apollo-Soyuz mission, little other science of note was done with the proportional counter system. In addition, the detector had a moderately high background level that steadily increased through the duration of the mission until almost no X-ray sources were discernible. The cause of the background problems remains unknown.


[Gallery] [Publications]

[All Missions] [by Time] [by Energy]


HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public

Last modified: Thursday, 26-Jun-2003 13:48:16 EDT