A&A Supplement series, Vol. 126, December II 1997, 555-561
Received March 4; accepted April 1, 1997
E. Aristidi
- M.
Carbillet - J.-L. Prieur
- B. Lopez
- Y.
Bresson - L. Koechlin
Send offprint request: E. Aristidi
UMR 6525 Astrophysique, Université de Nice Sophia, Antipolis,
Centre National de la Recherche Scientifique, Parc Valrose, F-06108 Nice
Cedex 2, France
Observatoire Midi Pyrénées, 14 Av. Edouard Belin,
F-31000 Toulouse, France
UMR 6528, Département Fresnel de
l'Observatoire de la Côte d'Azur, BP. 4229, F-06304 Nice Cedex 4, France
We present speckle observations of nineteen double stars and the triple star 2Cam. Angular separations, absolute position angles and relative photometry result from these observations. The angular separation is derived from the power spectrum. The position angle and the relative photometry are determined by two recent techniques: the cross-correlation between the speckle images and their square, and the ratios of twofold probability density functions of the images.
keywords: methods: data analysis -- techniques: image processing -- techniques: interferometric -- binaries: close