In Orbit Performance of the Einstein Observatory/HEAO-2 Imaging Proportional Counter
- 1 January 1981
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 28 (1) , 869-874
- https://doi.org/10.1109/tns.1981.4331295
Abstract
After two years of orbital operation, the IPC--a soft X-ray (0.2 - 4 keV) position sensitive proportional counter--continues to perform well after some initial gain changes, and is the most widely used focal plane instrument of the Einstein Observatory. X-ray images of several thousand cosmic X-ray sources have been obtained with a resolution of ~ 1.5 arcmin (FWHM) with a 1° field. Particle backgrounds are less than expected. The calibration of the instrument with respect to gain variations and spatial linearity is being refined by in-flight measurements.Keywords
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