| Issue |
EAS Publications Series
Volume 8, 2003
Astronomy with High Contrast Imaging
|
|
|---|---|---|
| Page(s) | 93 - 105 | |
| DOI | https://doi.org/10.1051/eas:2003054 | |
| Published online | 28 May 2003 | |
Claude Aime and Rémi Soummer (eds)
EAS Publications Series, 8 (2003) 93-105
Prolate apodized coronagraphy: numerical simulations for circular apertures
1
UMR 6525 Astrophysique, University of Nice Sophia-Antipolis,
06108 Nice Cedex 2, France
2
School of Physics, The University of Western Australia,
Crawley, WA 6009, Australia
The formalism for the prolate apodized coronagraphs is shortly outlined. A presentation of the numerical computation of the circular prolate apodization is given, and a comparison is made between the exact prolate and the solution obtained by Guyon & Roddier (2000), with an iterative algorithm. The agreement is excellent between the two solutions, provided a sufficient sampling of the mask. Numerical simulations are presented for circular apertures with prolate apodizations and compared to the classical unapodized technique: off-axis response, effect of mask size, central obscuration and chromatism.
© EAS, EDP Sciences, 2003