Low Light Level Quadriwave Lateral Shearing Interferometer for In Situ Wavefront Sensing

被引：0

作者：

Catanzaro, Brian ^{[1
]}

Wattellier, Benoit ^{[2
]}

Boldyreva, Ekaterina ^{[2
]}

Young, Eliot ^{[3
]}

Lewis, Michael ^{[4
]}

Juergens, Jeffrey ^{[4
]}

Woodruff, Robert ^{[5
]}

Hoffmann, Monica ^{[4
]}

机构：

[1] CFE Serv, 5147 Pacifica Dr, San Diego, CA 92109 USA

[2] Phasics SA, Espace Technol, Route Orme Merisiers, F-91190 St Aubin, France

[3] SWRI, Boulder, CO USA

[4] NASA, John H Glenn Res Ctr, Cleveland, OH USA

[5] Robert Woodruff Consulting, Boulder, CO USA

来源：

ADAPTIVE OPTICS SYSTEMS VI | 2018年 / 10703卷

关键词：

GHAPS; Balloon Based Telescope; Telescope; Wavefront Sensing; Focus Control; Shearing Interferometer;

D O I：

10.1117/12.2312331

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The environment of a balloon based telescope puts opto-mechanical stability demands that wavefront sensing and focus control are important features to consider. The GHAPS telescope is designed to correct for rigid body motion of the secondary mirror based upon wavefront sensing from reference stars. In order to support the concept of operations of this approach, the precision of wavefront sensing with candidate reference stars needs to be addressed. Precision is expected to degrade with reduction in irradiance. To confirm this, a study was conducted to determine the relationship between broadband and narrow spectral irradiance and wavefront measurement precision. The results of the study demonstrate that a precision of 5 nm RMS can be achieved with a 20 x 20 sampling of the wavefront with an irradiance of a visual magnitude 5 star on 1 meter aperture with an exposure of 30 msec.

引用

页数：11

共 25 条

[1] Aslam Shahid, 2016, GONDOLA HIGH ALTITUD
[2] Bell Alexander, 2010, SPIE
[3] Born M., 1980, Principles of Optics, V6th, P1
[4] Catanzaro B., 2018, ASTRONOMICAL TELESCO
[5] Catanzaro Brian, 2017, SPIE NASA MIRROR TEC
[6] Fienup J. R., 1991, SPIE
[7] Gehrz R., 2004, SPIE
[8] Guyon O., 2009, ASTROPHYSICAL J
[9] Lewis M., 2018, SPIE
[10] Lourie Nate, 2018, SPIE

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