Speckle interferometry with severely aberrated telescopes.
Abstract
The possibility of near-diffraction-limited resolution for speckle interferometry in the presence of severe defocus is investigated by quantitative measurements of the modulation transfer function (MTF). For roughly 20/pi waves of defocus, possible additional aberrations, and a telescope-atmosphere observing condition characterized by a ratio of diameter to incident wave correlation scale of 19.2, the MTF is monotonic and is depressed by a factor of less than 20 from that of the unaberrated system.
- Publication:
-
Journal of the Optical Society of America (1917-1983)
- Pub Date:
- September 1977
- DOI:
- 10.1364/JOSA.67.001277
- Bibcode:
- 1977JOSA...67.1277K
- Keywords:
-
- Aberration;
- Interferometry;
- Modulation Transfer Function;
- Speckle Patterns;
- Telescopes;
- Atmospheric Optics;
- Defocusing;
- Optical Data Processing;
- Spatial Filtering;
- Spectral Resolution;
- Wave Diffraction;
- Astronomy