NSSDCA ID: 1975-037A-01
Mission Name: SAS-CThis experiment determined the positions of very weak extragalactic X-ray sources. The instrument viewed a 100-sq deg region of the sky around the direction of the spin axis of the satellite. The nominal targets for a 1-year study were (1) the Virgo cluster of galaxies for 4 months, (2) the galactic equator for 2 months, (3) the Andromeda Nebula for 3 months, and (4) the Magellanic Clouds for 3 months. The instrumentation consisted of one 2.5-arc-min and one 4.5-arc-min FWHM modulation collimator, as well as proportional counters sensitive over the energy range from 1.5 to 10 keV. The effective area of each collimator was about 225 sq cm. The aspect system provided information on the orientation of the collimators to an accuracy of 15 arc-s. For additional information, see H. W. Schnopper et al., Ap. J., v. 210, p. L75, 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 |