12 September 2012 New horizons for VLTI 10 micron interferometry: first scientific measurements with external PRIMA fringe tracking
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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, J.-U. Pott, A. Müller, A. Müller, I. Karovicova, I. Karovicova, F. Delplancke, 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); doi: 10.1117/12.927027; https://doi.org/10.1117/12.927027
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