Cross-fringe technique for sensing piston errors of segmented mirror telescope

Seichi Sato; Makoto Hirose; Tadahito Mizutani; Toshiyoshi Kimura

doi:10.1117/12.2562116

13 December 2020 Cross-fringe technique for sensing piston errors of segmented mirror telescope

Seichi Sato, Makoto Hirose, Tadahito Mizutani, Toshiyoshi Kimura

Author Affiliations +

Proceedings Volume 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave; 114432L (2020) https://doi.org/10.1117/12.2562116
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

For the disaster prevention and mitigation, large segmented Earth observation telescope in the geostationary orbit is studied in JAXA. In order to obtain diffraction limited performance with the segmented telescope, it is necessary to co-phase the segmented primary mirrors with sub-wavelength accuracy. And since the displacement of the mirrors induced by environmental stress occurs during launching and in orbit, the phasing sensor also need to cover the measurement range exceed tens of micrometers. In this paper, we propose a technique for the purpose and enable us to obtain piston errors of multiple segments simultaneously independent of the edge orientation. The optical scheme for the telescope model is presented and some fundamental experiments are described.

Conference Presentation

Citation Download Citation

Seichi Sato, Makoto Hirose, Tadahito Mizutani, and Toshiyoshi Kimura "Cross-fringe technique for sensing piston errors of segmented mirror telescope", Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 114432L (13 December 2020); https://doi.org/10.1117/12.2562116

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE