The MROI fringe tracker: laboratory tracking with ICONN

T. M. McCracken; C. A. Jurgenson; J. S. Young; E. B. Seneta; D. F. Buscher; C. A. Haniff; M. J. Creech-Eakman; F. G. Santoro; A. V. Shtromberg; L. M. Schmidt; S. Rochelle

doi:10.1117/12.2055603

24 July 2014 The MROI fringe tracker: laboratory tracking with ICONN

T. M. McCracken, C. A. Jurgenson, J. S. Young, E. B. Seneta, D. F. Buscher, C. A. Haniff, M. J. Creech-Eakman, F. G. Santoro, A. V. Shtromberg, L. M. Schmidt, S. Rochelle

Author Affiliations +

Proceedings Volume 9146, Optical and Infrared Interferometry IV; 91461E (2014) https://doi.org/10.1117/12.2055603
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The loop is closed on ICONN, the Magdalena Ridge Observatory Interferometer fringe tracker. Results from laboratory experiments demonstrating ICONN's ability to track realistic, atmospheric-like path difference perturbations in real-time are shown. Characterizing and understanding the behavior and limits of ICONN in a controlled environment are key for reaching the goals of the MROI. The limiting factors in the experiments were found to be the light delivery system and temporary path length correction mechanism; not the on-sky components of ICONN. ICONN was capable of tracking fringes with a coherence loss below 5%; this will only improve in its final deployment.

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T. M. McCracken, C. A. Jurgenson, J. S. Young, E. B. Seneta, D. F. Buscher, C. A. Haniff, M. J. Creech-Eakman, F. G. Santoro, A. V. Shtromberg, L. M. Schmidt, and S. Rochelle "The MROI fringe tracker: laboratory tracking with ICONN", Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91461E (24 July 2014); https://doi.org/10.1117/12.2055603

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