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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

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.

Original languageEnglish
Title of host publicationOptical and Infrared Interferometry
DOIs
StatePublished - 2008
EventOptical and Infrared Interferometry - Marseille, France
Duration: Jun 23 2008Jun 27 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7013
ISSN (Print)0277-786X

Conference

ConferenceOptical and Infrared Interferometry
Country/TerritoryFrance
CityMarseille
Period06/23/0806/27/08

Keywords

  • Be stars
  • Binary stars
  • Differential phases
  • Imaging
  • Optical interferometry
  • Self calibration

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