Quantitative assessment of apodized square aperture

Abstract EN

Two-dimensional computer simulations are carried out to quantify the quality of apodized square aperture (ASA) in terms of the diffraction limited resolution and the efficiency of detection of faint companions.

The study involve the quality of the point spread function (psf), and the modulation transfer function (MTF) of a reference star.

Annular apodized square aperture (AASA) is also considered in this study.

The results are then compared with the classical circular aperture.

ASA shows high contrast which increases the possibility of detection of faint companions and AASA demonstrates significant high frequency components which leads to high resolution.