New horizons for VLTI 10 micron interferometry: first scientific measurements with external PRIMA fringe tracking

J.-U. Pott; A. Müller; I. Karovicova; F. Delplancke

doi:10.1117/12.927027

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12 September 2012 New horizons for VLTI 10 micron interferometry: first scientific measurements with external PRIMA fringe tracking

J.-U. Pott, A. Müller, I. Karovicova, F. Delplancke

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Proceedings Volume 8445, Optical and Infrared Interferometry III; 84450Q (2012) https://doi.org/10.1117/12.927027
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We report recent success to stabilize the VLTI/MIDI-10um beam-combiner with K-band fringe tracking, provided by PRIMA (FSU). After encouraging commissioning results, presented during the last SPIE, we accomplished in November 2011 a successful run of science demonstration. A broad range of targets were observed, from planet-hosting stars over YSO disks to AGN. We will present first results, focussing on the improvements on sensitivity and precision with respect to classical MIDI stand-alone observations. MIDI broad-band dispersion and group-delay can be reliably predicted by the fringe tracker to enable coherent integration beyond coherence time at the lambda/10 precision level.

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J.-U. Pott, A. Müller, I. Karovicova, and F. Delplancke "New horizons for VLTI 10 micron interferometry: first scientific measurements with external PRIMA fringe tracking", Proc. SPIE 8445, Optical and Infrared Interferometry III, 84450Q (12 September 2012); https://doi.org/10.1117/12.927027

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