Open AccessThe Effect of adding First Order Aberrations To Third Order Aberrations on Point Spread Function for Triangular Aperture
Author(s) -
Widad Hamza Tarkhan,
Ahlam Habeeb Hussien,
Areej Saeed Abdul Shaheed
Publication year - 2020
Publication title -
mağallaẗ al-kūfaẗ li-l-fiziyā'/journal of kufa - physics
Language(s) - English
Resource type - Journals
eISSN - 2312-6671
pISSN - 2077-5830
DOI - 10.31257/2018/jkp/2020/120104
Subject(s) - spherical aberration , coma (optics) , strehl ratio , contrast transfer function , optics , tilt (camera) , aberrations of the eye , physics , astigmatism , aperture (computer memory) , optical aberration , point spread function , focal length , rotation (mathematics) , adaptive optics , wavefront , mathematics , lens (geology) , geometry , acoustics
In this work, Point Spread Function (PSF) for triangular aperture was studied, in case of ideal optical system, also in case of presence first order aberrations )focal error and tilt aberration) and third order aberrations (spherical ,coma, and astigmatism aberrations) individually, and for the same values of aberration factor )W=0.1λ …..0.5 λ ) for angle of rotation (ѱ =0).First order aberrations were added to third order aberrations, to obtain the best balance and to reduce the curve width of the (PSF), and to increase the Strehl ratio, like adding a tilt aberration to the coma aberration and adding focal error to spherical aberration and astigmatism aberration. There are some aberrations effects impact negatively on point spread function, such as focal error with coma aberration and tilt aberration with spherical aberration.