Coherent fringe tracking and visibility estimation for MIDI

Walter J. Jaffe

doi:10.1117/12.551653

20 October 2004 Coherent fringe tracking and visibility estimation for MIDI

Walter J. Jaffe

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.551653
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

We describe and illustrate the techniques used on spectrally dispersed data from the MIDI interferometer to estimate and remove variations in the atmospheric delay and dispersion. The resulting interferograms can then be added coherently yielding estimates of spectral correlated flux and differential phase. The primary advantage over incoherent estimation of correlated flux is that the system noise need not be accurately known.

Citation Download Citation

Walter J. Jaffe "Coherent fringe tracking and visibility estimation for MIDI", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.551653

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