Modulation Transfer Function for Infra-red Stellar Speckle Interferometry: Evidence for a Log-normal Statistic
| Autor: | F. Sibille, Pierre Léna, A. Chelli, C. Roddier, F. Roddier |
|---|---|
| Rok vydání: | 1979 |
| Předmět: |
Physics
Wavefront business.industry Gaussian Astrophysics::Instrumentation and Methods for Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Image plane Electronic Optical and Magnetic Materials law.invention Telescope symbols.namesake Optics law Observatory Optical transfer function Log-normal distribution symbols Astrophysics::Solar and Stellar Astrophysics Speckle imaging business |
| Zdroj: | Optica Acta: International Journal of Optics. 26:583-595 |
| ISSN: | 0030-3909 |
| Popis: | Measurements of the energy spectra of infra-red images of stellar point sources were made at the Coude focus of the 3·8 m telescope at Kitt Peak National Observatory, U.S.A. A scanning slit was used to record the irradiance distribution in the image plane. Experimental results are compared with theoretical models, assuming either a circular gaussian or a log-normal statistic for the perturbation of the complex amplitude of the incoming wavefront. In both cases the telescope central obscuration is taken into account. A good fit is obtained with the log-normal model for the highest scanning rate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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