Wavefront amplitude errors for a TPF coronagraph: Their effects and possible correction

被引：1
作者：
Linfield, RP [1 ]
机构：
[1] Ball Aerosp & Technol Corp, Boulder, CO USA
来源：
OPTICAL, INFRARED, AND MILLIMETER SPACE TELESCOPES, PTS 1-3 | 2004年 / 5487卷
关键词：
coronagraph; planet search; Terrestrial Planet Finder; deformable mirrors;
D O I：
10.1117/12.549290
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Successful planet searches with a Terrestrial Planet Finder (TPF) coronagraph will require a highly uniform wavefront, in both phase and amplitude. Requirements for phase and amplitude uniformity are derived. A Deformable Mirror (DM) can achieve broadband correction of phase errors across the full observing band. Correction of amplitude errors with a DM is also possible, but only over half the image plane, and only for a limited bandwidth. For a 500-600 nm observing band, use of a DM can relax the reflectivity uniformity requirements on TPF mirrors by a factor of 10-15, and these relaxed requirements appear to be within the current capability for mirror coatings.
引用
收藏
页码：1255 / 1263
页数：9
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