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Recovering images from optical interferometric observations is one of themajor challenges in the field. Unlike the case of observations at radiowavelengths, in the optical the atmospheric turbulence changes the phases on avery short time scale, which results in corrupted phase measurements. In orderto overcome these limitations, several groups developed image reconstructiontechniques based only on squared visibility and closure phase information,which are unaffected by atmospheric turbulence. We present the results of twotechniques used by our group, which employed coherently integrated data fromthe Navy Prototype Optical Interferometer. Based on these techniques we wereable to recover complex visibilities for several sources and image them usingstandard radio imaging software. We describe these techniques, the correctionsapplied to the data, present the images of a few sources, and discuss theimplications of these results.

Solving the Imaging Problem with Coherently Integrated Multiwavelength Data