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Speckle Interferometry of Southern Double Stars. II. Measures from the CASLEO 2.15 Meter Telescope, 1995-1996
Relative astrometry is presented for 198 observations of 160 doublestars. The data were obtained at the 2.15 m telescope at the ComplejoAstronómico El Leoncito (Argentina) with a multianodemicrochannel array (MAMA) detector system. Five high-qualitynondetections are also reported. When judged against ephemeris positionsfor binaries with very well determined orbits, the separation residualsexhibit a root mean square deviation of13.2+3.4-1.9 mas and the position angle residualsexhibit rms deviation of 2.9d+0.8d-0.5d. Factorsaffecting the measurement precision are discussed.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Balina |
| Sað Açýklýk: | 02h05m59.35s |
| Yükselim: | -22°09'02.5" |
| Görünürdeki Parlaklýk: | 8.226 |
| Uzaklýk: | 132.45 parsek |
| özdevim Sað Açýklýk: | 6 |
| özdevim Yükselim: | 58.3 |
| B-T magnitude: | 8.776 |
| V-T magnitude: | 8.272 |
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