The power spectrum extended technique applied to images of binary stars in the infrared

TL;DR

This paper demonstrates the application of the Power Spectrum Extended (PSE) technique to infrared images of binary stars, achieving diffraction-limited reconstructions and precise measurements of their properties.

Contribution

It extends the PSE method to real astronomical data, showcasing its effectiveness in reconstructing high-resolution images of binary stars in the infrared.

Findings

Images reconstructed at the diffraction limit

Accurate measurements of binary star astrometry and photometry

Successful application to about 30 binary stars in H band

Abstract

We recently proposed a new lucky imaging technique, the Power Spectrum Extended (PSE), adapted for image reconstruction of short-exposure astronomical images in case of weak turbulence or partial adaptive optics correction. In this communication we show applications of this technique to observations of about 30 binary stars in H band with the 1m telescope of the Calern C2PU observatory. We show some images reconstructed at the diffraction limit of the telescope and provide measurements of relative astrometry and photometry of observed couples.