Speckle masking.
Abstract
Speckle masking (bispectrum or triple correlation processing) yields diffraction-limited images in spite of image degradation by the atmosphere and by telescope aberrations. For example, with the ESO 3.6-m telescope a resolution of 0.028arcsec can be obtained at λ ≡ 400 nm. The limiting magnitude is ≡18m. The authors discuss various modifications of speckle masking and show applications to the central object in NGC 3603, η Carinae, and the Seyfert galaxies NGC 7469 and NGC 1068.
- Publication:
-
European Southern Observatory Conference and Workshop Proceedings
- Pub Date:
- 1988
- Bibcode:
- 1988ESOC...29..151B
- Keywords:
-
- H II Regions:Speckle Interferometry;
- Methods of Reduction:Speckle Interferometry;
- Seyfert Galaxies:Speckle Interferometry;
- Speckle Interferometry:H II Regions;
- Speckle Interferometry:Methods of Reduction;
- Speckle Interferometry:Seyfert Galaxies