TY - JOUR
T1 - Characterizing closure-phase measurements at IOTA
AU - Ragland, Sam
AU - Traub, Wesley A.
AU - Berger, Jean-Philippe
AU - Millan-Gabet, Rafael
AU - Monnier, John D.
AU - Pedretti, Ettore
AU - Schloerb, F. P.
AU - Carleton, Nathaniel P.
AU - Haguenauer, Pierre
AU - Kern, Pierre Y.
AU - Labeye, Pierre R.
AU - Lacasse, Marc G.
AU - Malbet, Fabien
AU - Rousselet-Perraut, Karine
PY - 2004/10/1
Y1 - 2004/10/1
N2 - 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.
AB - 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.
M3 - Article
VL - 5491
SP - 1390
JO - New Frontiers in Stellar Interferometry, Proceedings of SPIE Volume 5491. Edited by Wesley A. Traub. Bellingham, WA: The International Society for Optical Engineering, 2004., p.1390
JF - New Frontiers in Stellar Interferometry, Proceedings of SPIE Volume 5491. Edited by Wesley A. Traub. Bellingham, WA: The International Society for Optical Engineering, 2004., p.1390
ER -