New beam-combination techniques at IOTA

Creators: Traub, W. A.; Ahearn, A.; Carleton, N. P.; Berger, J.-P.; Brewer, M.; Hofmann, K. H.; Kern, P.; Lacasse, M. G.; Malbet, F.; Millan-Gabet, R.; Monnier, J. D.; Ohnaka, K.; Pedretti, E.; Ragland, S.; Schloerb, F. P.; Souccar, K.; Weigelt, G.

Other:: Traub, Wesley A.

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Abstract

New beam combination techniques, using two and three telescopes, have been the focus of activity at IOTA during the past two years since our last update. In particular, we have added a third telescope, made closure-phase measurements, demonstrated two- and three-beam combination with integrated optics combiners, demonstrated two-beam combination with an asymmetric coupler, and made simultaneous JHK visibility measurements with an image-plane combiner.

Additional Information

© 2003 Society of Photo-optical Instrumentation Engineers (SPIE). We are grateful to the the Smithsonian Institution for its ongoing support of infrastructure and research at IOTA. We acknowledge NASA for its support of the third telescope addition to IOTA. We also acknowledge the NSF for its support of instrumentation and personnel at IOTA.

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