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.

引用

页码：395 / 402

页数：8

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