A Method to Estimate Fried's Seeing Parameter from a Time Series of Arbitrary Resolved Structures Imaged Through the Atmosphere
Abstract
A method is presented that allows to estimate the effective MTF from the observation of arbitrary structure with the use of Fried-Korff theory. The ratio of the squared modulus of the average Fourier transform and the average power spectrum serves as an estimator for the Fried parameter r0. To a first approximation, this ratio is independent from the observed object. Additionally, the behaviour of the ratio in regions beyond the seeing limit in the Fourier plane may be analyzed to obtain an estimate of the speckle interferometry signal-to-noise ratio.
- Publication:
-
IAU Colloq. 79: Very Large Telescopes, their Instrumentation and Programs
- Pub Date:
- 1984
- Bibcode:
- 1984vlti.conf..203V