A self-calibration approach for optical long baseline interferometry imaging

TL;DR

This paper adapts the self-calibration technique from radio-interferometry to optical long baseline interferometry, improving image reconstruction by addressing unknown phase errors.

Contribution

It rigorously formulates OLBI data processing within the self-calibration framework and demonstrates its effectiveness on real datasets.

Findings

Effective phase error correction in OLBI

Improved image quality in optical interferometry

Validation on real astronomical data

Abstract

Current optical interferometers are affected by unknown turbulent phases on each telescope. In the field of radio-interferometry, the self-calibration technique is a powerful tool to process interferometric data with missing phase information. This paper intends to revisit the application of self-calibration to Optical Long Baseline Interferometry (OLBI). We cast rigorously the OLBI data processing problem into the self-calibration framework and demonstrate the efficiency of the method on real astronomical OLBI dataset.