Checking the Pointing Accuracy of Air Fluorescence Detectors with Star Light
Abstract
We have developed a method to check and monitor the mirror pointing of air fluorescence cosmic ray detectors with light from UV bright stars crossing the field of view of the photomultiplier tubes [2]. The method is applied to recent data from the HiRes 2 FADC system to evaluate the pointing accuracy of the cameras. In addition, we extract optical parameters like the spot shape, i.e. the shape of the image of point-like objects on the photomultiplier clusters.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- July 2003
- Bibcode:
- 2003ICRC....2..865W