NSSDCA ID: 1975-057A-04
Mission Name: OSO 8This Lockheed Mapping X-ray Heliometer experiment was designed to measure the location, spectrum, and intensity of moderate-energy X-rays (2 to 30 keV) from individual solar active regions (including flaring regions) and from extrasolar X-ray sources. The instrument consisted of three X-ray collimator-detector systems, a power supply, and a data accumulation/readout system. The collimators were identical but oriented differently and had fields of view of 2.1 arc-min by 10-deg FWHM. One collimator was oriented so that the 2.1 arc-min field of view was parallel to the spacecraft spin axis; the other two collimators were inclined plus and minus 60 deg relative to the spin axis. The detectors were proportional counters of various areas and window thicknesses allowing a wide dynamic range of activity to be observed. The experiment was operated from June 1975 through September 1978 in a period of mainly moderate to low solar activity. For more information, see J. M. Mosher, Solar Phy., v. 64, p. 109, 1979; C. J. Wolfson et al., Solar Phy., v. 55, p. 181, 1977.
Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Richard C. Catura | Other Investigator | Lockheed Palo Alto | |
Prof. J. Leonard Culhane | Other Investigator | University College, London | jlc@mssl.ucl.ac.uk |
Dr. Loren W. Acton | Principal Investigator | Lockheed Palo Alto | acton@physics.montana.edu |