New method for determining the transmitted wavefront error of interference filters

被引：0

作者：

Barrick, G ^{[1
]}

Szarlan, T ^{[1
]}

机构：

[1] Canada France Hawaii Telescope Corp, Kamuela, HI 96743 USA

来源：

OPTICAL AND IR TELESCOPE INSTRUMENTATION AND DETECTORS, PTS 1 AND 2 | 2000年 / 4008卷

关键词：

filters; wavefront error; curvature sensing;

D O I：

10.1117/12.395408

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

To assist in determining and tracking the transmitted wavefront error of the Canada-France-Hawaii Telescope filter stock, a method for determining the wavefront error, in transmission, of the filters using a white-light source has been investigated. The method uses the ef software from Laplacian Optics which determines a wavefront based on curvature sensing. The filter is placed in a collimated white-light beam. After the filter, the beam is imaged onto a small CCD which is placed on a translation stage. The CCD is moved to either side of focus to produce the two out-of-focus images required for curvature sensing. The results of this investigation compared to results using an interferometer will be presented.

引用

页码：896 / 898

页数：3