The Copernicus Satellite (OAO-3)
![photo of Copernicus satellite in the clean room](https://webarchive.library.unt.edu/eot2008/20090117090640im_/http://heasarc.gsfc.nasa.gov/Images/oao3/oao3_small2.gif)
Mission Characteristics
![*](https://webarchive.library.unt.edu/eot2008/20090117090640im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
![*](https://webarchive.library.unt.edu/eot2008/20090117090640im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
![*](https://webarchive.library.unt.edu/eot2008/20090117090640im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
The University College London X-ray Experiment (UCLXE) consisted of 4 co-aligned X-ray detectors
- 3 Wolter type 0 grazing incidence telescopes with 2 proportional counters (3-9 Å and 6-18 Å) and a channel photomultiplier at the foci. (variable FOV from 1 to 12 arcmin)
- 1 proportional counter (1-3 Å) with a simple collimation tube. (2.5° X 3.5° FOV)
![*](https://webarchive.library.unt.edu/eot2008/20090117090640im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
- Discovery of several log period pulsars (e.g. X Per).
- Discovery of absorpton dips in Cyg X-1.
- Long-term monitoring of pulsars and other bright X-ray binaries.
- Observed rapid intensity variability from Cen A.
![*](https://webarchive.library.unt.edu/eot2008/20090117090640im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
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Last modified: Thursday, 26-Jun-2003 13:48:54 EDT