The Sydney University PAPA camera
Abstract
The Precision Analog Photon Address (PAPA) camera is a photon-counting array detector that uses optical encoding to locate photon events on the output of a microchannel plate image intensifier. The Sydney University camera is a 256x256 pixel detector which can operate at speeds greater than 1 million photons per second and produce individual photon coordinates with a deadtime of only 300 ns. It uses a new Gray coded mask-plate which permits a simplified optical alignment and successfully guards against vignetting artifacts.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- April 1994
- DOI:
- 10.1017/S1323358000019664
- Bibcode:
- 1994PASA...11...50L
- Keywords:
-
- Cameras;
- Image Intensifiers;
- Microchannel Plates;
- Photons;
- Radiation Counters;
- Astronomical Photography;
- Gray Scale;
- Pixels;
- Instrumentation and Photography