1998A&AS..133..395B


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.16CET04:13:06

1998A&AS..133..395B - Astron. Astrophys., Suppl. Ser., 133, 395-402 (1998/December-2)

Present performance of the dark-speckle coronagraph.

BOCCALETTI A., MOUTOU C., LABEYRIE A., KOHLER D. and VAKILI F.

Abstract (from CDS):

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 coronagraphic 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 δ Per and η Psc and give an independent estimate of their position and magnitude difference.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual: δ Per, η Psc, η And - instrumentation: interferometers - miscellaneous

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * eta And SB* 00 57 12.4001825 +23 25 03.535627 6.05 5.36 4.42 3.69 3.21 G8-III 178 0
2 * eta Psc ** 01 31 29.0102587 +15 20 44.968540 5.320 4.600 3.620 2.90 2.40 G7IIIa 232 0
3 * del Per Be* 03 42 55.5042561 +47 47 15.174633 2.38 2.89 3.01 2.99 3.10 B5III 301 0
4 * bet01 Sco SB* 16 05 26.2319826 -19 48 19.630018 1.68 2.55 2.62 2.60 2.69 B1V 531 1

    Equat.    Gal    SGal    Ecl

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2019.12.16-04:13:06

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