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

Florentin A. Millour; Martin Vannier; Anthony Meilland

doi:10.1117/12.925689

12 September 2012 Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, and DPSC

Florentin A. Millour, Martin Vannier, Anthony Meilland

Author Affiliations +

Proceedings Volume 8445, Optical and Infrared Interferometry III; 84451B (2012) https://doi.org/10.1117/12.925689
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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 V² 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.

Citation Download Citation

Florentin A. Millour, Martin Vannier, and Anthony Meilland "Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, and DPSC", Proc. SPIE 8445, Optical and Infrared Interferometry III, 84451B (12 September 2012); https://doi.org/10.1117/12.925689

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available