Characterizing closure-phase measurements at IOTA

被引：4

作者：

Ragland, S ^{[1
]}

Traub, W ^{[1
]}

Berger, JP ^{[1
]}

Millan-Gabet, R ^{[1
]}

Monnier, JD ^{[1
]}

Pedretti, E ^{[1
]}

Schloerb, FP ^{[1
]}

Carleton, NP ^{[1
]}

Haguenauer, P ^{[1
]}

Kern, P ^{[1
]}

Labeye, P ^{[1
]}

Lacasse, MG ^{[1
]}

Malbet, F ^{[1
]}

Perraut, K ^{[1
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

NEW FRONTIERS IN STELLAR INTERFEROMETRY, PTS 1-3 | 2004年 / 5491卷

关键词：

optical interferometry; closure phase technique; spatial filtering; integrated optics; imaging;

D O I：

10.1117/12.552447

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We are working towards imaging the surfaces and circumstellar envelopes of Mira stars in the near-infrared, using the IOTA interferometer and the IONIC integrated-optics 3-beam combiner. In order to study atmospheric structures of these stars, we installed 3 narrow-band filters that subdivide H-band into 3 roughly equal-width sub-bands - a central one for continuum, and 2 adjacent ones to sample Mira star's (mostly water) absorption-bands. We present here our characterization of the IOTA 3-Telescope interferometer for closure-phase measurements with broad and narrow-band filters in the H atmospheric window. This includes characterizing the stability, chromaticity, and polarization effects of the present IOTA optics with the IONIC beam-combiner, and characterizing the accuracy of our closure phase measurements.

引用

页码：1390 / 1397

页数：8

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