2004A&A...424..719L


Query : 2004A&A...424..719L

2004A&A...424..719L - Astronomy and Astrophysics, volume 424, 719-726 (2004/9-3)

First observations with an H-band integrated optics beam combiner at the VLTI.

LEBOUQUIN J.B., ROUSSELET-PERRAUT K., KERN P., MALBET F., HAGUENAUER P., KERVELLA P., SCHANEN I., BERGER J.P., DELBOULBE A., AREZKI B. and SCHOELLER M.

Abstract (from CDS):

This paper reports results obtained with the Very Large Telescope Interferometer Commissioning Instrument (VLTI-VINCI) where the fiber interferometric coupler MONA was temporarily replaced by an integrated optics beam combiner (IONIC). The two-beam combiner operating in the H atmospheric band was tested at Paranal during two weeks in July 2002. Fringes were recorded on several stars with the siderostats and the Unit Telescopes (UT). We demonstrate that integrated optics allows beam combination with a high interferometric efficiency, stability and spatial filtering. The instrumental visibility of VLTI+IONIC is better than 85%, which is just 5% under the visibility of the IONIC device alone. During this run, the flux injection in the IONIC combiner was not optimized since we used the K-band MONA optics. However, we obtain fringes with the 35cm siderostats on a star of magnitude mH=2.47 (κ2 Scl). It allows us to extrapolate a magnitude around mH∼6 with 8m telescopes without adaptive optics and in the same poor injection conditions.

Abstract Copyright:

Journal keyword(s): techniques: interferometric - methods: data analysis - instrumentation: interferometers

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * kap02 Scl * 00 11 34.4207187216 -27 47 58.990819164   6.756 5.404     K2III 44 0
2 * iot Cet * 00 19 25.6741634 -08 49 26.111055 5.94 4.77 3.55 2.70 2.11 K1+IIICN0.5 174 0
3 * alf Eri Be* 01 37 42.84548 -57 14 12.3101 -0.36 0.30 0.46 0.49 0.60 B6Vpe 456 0
4 * chi Phe PM* 02 01 42.3763488264 -44 42 48.626334576 8.45 6.63 5.14 3.92 3.03 K5IV 59 0
5 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 1798 1
6 * bet Ori s*b 05 14 32.27210 -08 12 05.8981 -0.56 0.10 0.13 0.13 0.15 B8Iae 742 0
7 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1203 0
8 * E Hya PM* 14 50 17.3082918816 -27 57 37.300431780 7.28 5.81 4.41 3.33 2.57 K2.5IIIbFe-1: 80 0
9 * eta Ser PM* 18 21 18.6005560 -02 53 55.776595 4.84 4.19 3.25 2.55 2.05 K0III-IV 364 0
10 * lam Sgr PM* 18 27 58.2407185 -25 25 18.114589 4.75 3.85 2.81 2.06 1.50 K1IIIb 267 0
11 * alf Aql dS* 19 50 46.99855 +08 52 05.9563 1.07 0.98 0.76 0.62 0.49 A7Vn 848 0
12 HD 189831 PM* 20 03 33.4666224840 -37 56 26.465857980   6.176 4.764     K4III 43 0
13 * alf Ind PM* 20 37 34.0320077 -47 17 29.402601 4.90 4.11 3.11     K0III-IV 128 0
14 * 24 Cap PM* 21 07 07.6673269 -25 00 21.079041 8.04 6.11 4.50 3.22 2.24 M1-III 77 0
15 * tau Aqr * 22 49 35.5015682 -13 35 33.476641 7.51 5.57 3.98 2.79 1.84 M0III 81 0
16 HD 216149 * 22 51 02.1589579824 -39 09 24.608634876   6.851 5.400     K3III 54 0
17 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1179 3

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2022.05.22-01:29:37

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