Simplified solution of diffraction from a Lyot system
Abstract
This paper presents a derivation of a simplified analytical solution of diffraction from a Lyot (1939) system designed for observation of the solar corona outside of eclipses. Applying the theorem of Papoulis (1986) to simplify the calculations, a simplified solution is derived which is found to be in reasonable agreement with the exact solution. The simplified solution suffices for the preliminary evaluation of the amount of diffraction reduction needed to meet certain system requirements and also serves as a guideline for further apodization.
 Publication:

Applied Optics
 Pub Date:
 January 1988
 DOI:
 10.1364/AO.27.000027
 Bibcode:
 1988ApOpt..27...27W
 Keywords:

 Coronagraphs;
 Light Scattering;
 Signal To Noise Ratios;
 Airy Function;
 Bessel Functions;
 Convolution Integrals;
 Fourier Transformation;
 Optics;
 DIFFRACTION;
 CORONOGRAPHS;
 ASTRONOMY