NSSDCA ID: 1975-037A-02
Mission Name: SAS-CThe objectives of this experiment were to locate galactic X-ray sources to 15 arc-s and to monitor these sources for intensity variations. The source positions were determined with the use of the modulation collimators of the Extragalactic Experiment during the nominal 2-month observation of the galactic equator. The monitoring of the X-ray sky was accomplished by the use of three slat collimators. One collimator, 1- by 70-deg FWHM, was oriented perpendicular to the equatorial plane of the satellite, while the other two, each 0.5- by 45-deg FWHM, were oriented 30 deg above and 30 deg below the first. The detector behind each collimator was a proportional counter, sensitive from 1.5 to 13 keV, with an effective area of about 100 sq cm. The 1.0-deg collimator had an additional counter of the same area, sensitive from 8 to 50 keV. Three lines of position were obtained for any given source when the satellite was being spun at a steady rotation of 4 arc-min/s about the Z axis. For additional information, see W. H. G. Lewin et al., Ap. J., v. 207, p. L95, 1976.
Mass: 75.3 kg
Power (avg): 17.5 W
Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Robert W. Rasche | General Contact | Massachusetts Institute of Technology | rrasche@as.arizona.edu |
Dr. Hale V. Bradt | Other Investigator | Massachusetts Institute of Technology | hale@mit.edu |
Dr. Walter H. G. Lewin | Other Investigator | Massachusetts Institute of Technology | lewin@space.mit.edu |
Dr. Herbert W. Schnopper | Other Investigator | Danish Space Research Institute | |
Dr. George W. Clark | Principal Investigator | Massachusetts Institute of Technology | gwc@space.mit.edu |