Prediction of the off-axis point spread function for large field of view astronomical adaptive optics images

被引：0
|
作者：
Aubailly, M [1 ]
Roggemann, MC [1 ]
Schulz, TJ [1 ]
机构：
[1] Michigan Technol Univ, Houghton, MI 49931 USA
来源：
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications | 2005年 / 5814卷
关键词：
D O I：
10.1117/12.603766
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Atmospheric turbulence corrupts astronomical images formed by ground-based telescopes. Adaptive optics (AO) systems allow the effects of turbulence-induced aberrations to be reduced for a narrow field of view (FOV) corresponding approximately to the isoplanatic angle theta(0). For field angles larger than theta(0), the point spread function (PSF) gradually degrades as the field angle increases. Knowledge of the space-varying PSF is essential for image reconstruction. In this paper, we present a technique to predict the PSF as function of the field angle. The results are validated by mean of simulations. The predicted PSF is compared to the simulated PSF and we obtain a mean square (MS) error of 4.3% between the predicted and the simulated PSF in the worse case.
引用
收藏
页码：262 / 267
页数：6
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