In orbit performance of the Einstein Observatory HEAO-2 imaging proportional counter.
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 about 1.5 arcmin (FWHM) with a 1-deg 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.
- Publication:
-
IEEE Transactions on Nuclear Science
- Pub Date:
- February 1981
- DOI:
- 10.1109/TNS.1981.4331295
- Bibcode:
- 1981ITNS...28..869G
- Keywords:
-
- Heao 2;
- Proportional Counters;
- X Ray Imagery;
- X Ray Sources;
- Astronomical Observatories;
- Calibrating;
- Cosmic X Rays;
- Focal Plane Devices;
- Quantum Efficiency;
- Spacecraft Instrumentation;
- Proportional Counters:X Rays