Seeing measurements with a pupil-plane rotation shearing interferometer.
Abstract
A compact, very stable, rotation-shearing interferometer is used to determine seeing quality from wavefront coherence measurements on the telescope pupil. A change in the rotational shear enables optimization of the instrument according to telescope size and seeing conditions. Fringes are recorded directly on film without intensification. Fried's seeing parameter r0 is estimated with a few per cent accuracy. The result of recent measurements is presented.
- Publication:
-
Identification, Optimization, and Protection of Optical Telescope Sites
- Pub Date:
- 1987
- Bibcode:
- 1987iopo.conf...77R
- Keywords:
-
- Seeing