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http://hdl.handle.net/20.500.12386/28850
Titolo: | Speckle observations with PISCO in Calern (France): I. Astrometric measurements of visual binaries in 2015-2016 | Autori: | SCARDIA, Marco Rivet, Jean-Pierre Prieur, Jean-Louis Pansecchi, Luigi Argyle, Robert W. Ling, Josefina F. Aristidi, Eric ZANUTTA, Alessio Vernet, David Abe, Lyu Bendjoya, Philippe Dimur, Cécile Suárez, Olga |
Data pubblicazione: | 2019 | Rivista: | ASTRONOMISCHE NACHRICHTEN | Numero: | 340 | Fascicolo: | 8 | Da pagina:: | 771 | Abstract: | We present relative astrometric measurements of visual binaries, made in 2015-2016 with the speckle camera pupil interferometry speckle camera and coronagraph (PISCO) at the 1-m Epsilon telescope of the C2PU facility (Observatoire de la Côte d'Azur, Calern site). Our observing list contains orbital couples as well as binaries whose motion is still uncertain. From our 1,233 observations of 1,173 multiple stars, we obtained 1,170 new measurements with angular separations in the range 0″.1 — 8″.2, and an average accuracy of 0″.0078. The mean error on the position angles is 0°.54. Most of the position angles were determined without the usual 180° ambiguity with the application of the direct vector autocorrelation technique and/or by inspection of the long integration files. | URI: | http://hdl.handle.net/20.500.12386/28850 | URL: | https://onlinelibrary.wiley.com/doi/abs/10.1002/asna.201913642 | ISSN: | 0004-6337 | DOI: | 10.1002/asna.201913642 | Bibcode ADS: | 2019AN....340..771S | Fulltext: | open |
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