Present performance of the dark-speckle coronagraph

被引：17
作者：
Boccaletti, A
Moutou, C
Labeyrie, A
Kohler, D
Vakili, F
机构：
[1] Observ Paris, DESPA, F-92195 Meudon, France
[2] Observ Haute Provence, F-04870 St Michel, France
[3] Coll France, F-75321 Paris, France
[4] Observ Cote Azur, Dept Fresnel, F-06460 St Vallier Thiey, France
来源：
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1998年 / 133卷 / 03期
关键词：
planetary systems; stars : delta Per; eta Psc; eta And; instrumentation; interferometers; miscellaneous;
D O I：
10.1051/aas:1998329
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the recent developments of the dark speckle coronagraph and results obtained on two close binary stars. The central star is occulted by a Lyot corona graphic system and the residual speckle pattern is detected on a photon-counting camera. Achromaticity is achieved across a wide spectral band, using a Wynne corrector. We observed the relatively faint companions of delta Per and eta Psc and give an independent estimate of their position and magnitude difference.
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收藏
页码：395 / 402
页数：8
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