Reconstructed images of Alpha Orionis using stellar speckle interferometry.
Abstract
A recently developed technique to recover nearly diffraction-limited images of supergiant stars such as Alpha Orionis (Betelgeuse) from speckle interferometry data is discussed. This method relies on the digital identification and coaddition of the brightest individual speckles within a large number of short-exposure speckle photographs. The resulting average speckle may be thought of as the convolution of a point source speckle profile with the actual object intensity pattern. By making use of this point angular diameters and limb darkening coefficients are derived in addition to finding evidence of possible surface structure on the star.
- Publication:
-
Journal of the Optical Society of America (1917-1983)
- Pub Date:
- November 1976
- DOI:
- 10.1364/JOSA.66.001243
- Bibcode:
- 1976JOSA...66.1243W
- Keywords:
-
- Astronomical Photography;
- Image Enhancement;
- Interferometry;
- Speckle Patterns;
- Supergiant Stars;
- Binary Stars;
- Diffraction Patterns;
- Limb Darkening;
- Point Sources;
- Stellar Spectrophotometry;
- Telescopes;
- Astronomy