Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, \& DPSC
Abstract
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 Beauty Contest this year and can be applied to classical imaging using V 2 and closure phases. These two addition to image reconstruction provide a way of having more reliable images. The last recipe is similar in its principle as the self-calibration technique used in radio-interferometry. We call it also self-calibration, but it uses the wavelength-differential phase as a proxy of the object phase to build-up a full-featured complex visibility set of the observed object. This technique needs a first image-reconstruction run with an available software, using closure-phases and squared visibilities only. We used it for two scientific papers with great success. We discuss here the pros and cons of such imaging technique.
Cite
@article{arxiv.1207.4773,
title = {Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, \& DPSC},
author = {Florentin Millour and Martin Vannier and Anthony Meilland},
journal= {arXiv preprint arXiv:1207.4773},
year = {2015}
}
Comments
9 pages, to be published in SPIE proceedings; Optical and Infrared Interferometry III, Amsterdam : Netherlands (2012)