| Issue |
A&A
Volume 475, Number 2, November IV 2007
|
|
|---|---|---|
| Page(s) | 771 - 774 | |
| Section | Astronomical instrumentation | |
| DOI | https://doi.org/10.1051/0004-6361:20077989 | |
| Published online | 17 September 2007 | |
Suppressing anisoplanatism effects in speckle interferometry
1
Institut für Theoretische Astrophysik, Universität Tübingen, Auf der Morgenstelle 10, 72076 Tübingen, Germany e-mail: stelzer@tat.physik.uni-tuebingen.de
2
Institut für Theoretische Astrophysik, Universität Tübingen, Hintere Grabenstr. 30, 72070 Tübingen, Germany
Received:
31
May
2007
Accepted:
27
August
2007
Aims. The effect of anisoplanatism in speckle interferometry is studied with emphasis on the autocorrelation function and Knox-Thompson data.
Methods. We introduce a method for eliminating anisoplanatism artefacts by statistical analysis of Fourier amplitudes calculated from Knox-Thompson data.
Results. With this method, it is possible to suppress anisoplanatism artefacts nearly completely.
Key words: techniques: image processing / atmospheric effects / techniques: interferometric / methods: data analysis
© ESO, 2007
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