Speckle Interferometry and Speckle Holography with the 1.5-METER and 3.6-METER ESO Telescopes
Abstract
That great arch-enemy of all observing astronomers, the seeing, can be pacified with a method called speckle interferometry. For some years it has provided us with "real" pictures of close binary systems and even of the surfaces of some stars, e. g. the well-publicized image of Betelgeuze. So far, however, the speckle techniquewhich is based on very short exposures and very long focallengths-has been limited to comparatively bright objects. Drs. Johannes Ebersberger and Gerd Weigelt, from the Physics Institute of the Erlangen-Nürnberg University, Fed. Rep. of Germany, review recent speckle work at La Silla. It will be good news to many that they are reasonably confident that objects of magnitude 16 or even fainter may soon be within reach of speckle interferometry!
- Publication:
-
The Messenger
- Pub Date:
- September 1979
- Bibcode:
- 1979Msngr..18...24E
- Keywords:
-
- Astronomical Photography;
- Holography;
- Interferometry;
- Speckle Patterns;
- Telescopes;
- Astronomical Observatories;
- Binary Stars;
- Image Resolution;
- Astronomy