Solving the imaging problem with coherently integrated multiwavelength data

H. R. Schmitt; T. A. Pauls; J. T. Armstrong; D. Mozurkewich; A. M. Jorgensen; R. B. Hindsley; C. Tycner; R. T. Zavala; J. A. Benson; D. J. Hutter

doi:10.1117/12.789487

28 July 2008 Solving the imaging problem with coherently integrated multiwavelength data

H. R. Schmitt, T. A. Pauls, J. T. Armstrong, D. Mozurkewich, A. M. Jorgensen, R. B. Hindsley, C. Tycner, R. T. Zavala, J. A. Benson, D. J. Hutter

Author Affiliations +

Proceedings Volume 7013, Optical and Infrared Interferometry; 70131H (2008) https://doi.org/10.1117/12.789487
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

Recovering images from optical interferometric observations is one of the major challenges in the field. Unlike the case of observations at radio wavelengths, in the optical the atmospheric turbulence changes the phases on a very short time scale, which results in corrupted phase measurements. In order to overcome these limitations, several groups developed image reconstruction techniques based only on squared visibility and closure phase information, which are unaffected by atmospheric turbulence. We present the results of two techniques used by our group, which employed coherently integrated data from the Navy Prototype Optical Interferometer. Based on these techniques we were able to recover complex visibilities for several sources and image them using standard radio imaging software. We describe these techniques, the corrections applied to the data, present the images of a few sources, and discuss the implications of these results.

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H. R. Schmitt, T. A. Pauls, J. T. Armstrong, D. Mozurkewich, A. M. Jorgensen, R. B. Hindsley, C. Tycner, R. T. Zavala, J. A. Benson, and D. J. Hutter "Solving the imaging problem with coherently integrated multiwavelength data", Proc. SPIE 7013, Optical and Infrared Interferometry, 70131H (28 July 2008); https://doi.org/10.1117/12.789487

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