Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, and DPSC

摘要

We present here three recipes for getting better images with optical interferometers. Two of them, Low-Frequencies Filling and Brute-Force Monte Carlo were used in our participation to the Interferometry BeautyContest this year and can be applied to classical imaging using Vsup2/sup and closure phases. These two addition to image reconstruction provide a way of having more reliable images. The last recipe is similar in its principleas the self-calibration technique used in radio-interferometry. We call it also self-calibration, but it uses thewavelength-differential phase as a proxy of the object phase to build-up a full-featured complex visibility setof the observed object. This technique needs a first image-reconstruction run with an available software, usingclosure-phases and squared visibilities only. We used it for two scientific papers with great success. We discusshere the pros and cons of such imaging technique.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.