Primary mirror alignment and assembly for a multispectral space telescope

Wei-Cheng Lin; Shenq-Tsong Chang; Sheng-Hsiung Chang; Chen-Peng Chang; Yu-Chuan Lin; Po-Hsuan Huang; Ho-Lin Tsay; Chi-Chieh Chin; Hsu-Pin Pan; Ting-Ming Huang

doi:10.1117/12.2028951

24 October 2013 Primary mirror alignment and assembly for a multispectral space telescope

Wei-Cheng Lin, Shenq-Tsong Chang, Sheng-Hsiung Chang, Chen-Peng Chang, Yu-Chuan Lin, Po-Hsuan Huang, Ho-Lin Tsay, Chi-Chieh Chin, Hsu-Pin Pan, Ting-Ming Huang

Author Affiliations +

Proceedings Volume 8889, Sensors, Systems, and Next-Generation Satellites XVII; 888922 (2013) https://doi.org/10.1117/12.2028951
Event: SPIE Remote Sensing, 2013, Dresden, Germany

Abstract

For a currently developing multispectral space Cassegrain telescope, the primary mirror with 450 mm clear aperture is made of Zerodur and lightweighted at a ratio about 50 % to meet both thermal and mass requirement. For this mirror, it is critical to reduce the astigmatism caused from the gravity effect, bonding process and the deformation from the mounting to the main structure of the telescope (main plate). In this article, the primary mirror alignment, MGSE, assembly process and the optical performance test for the primary mirror assembly are presented. The mechanical shim is the interface between the iso-static mount and main plate. It is used to compensate the manufacture errors of components and differences of local co-planarity errors to prevent the stress while iso-static mount (ISM) is screwed to main plate. After primary mirror assembly, an optical performance test method called bench test with novel algorithm is used to analyze the astigmatism caused from the gravity effect and the deformation from the mounting or supporter. In an effort to achieve the requirement for the tolerance in primary mirror assembly, the astigmatism caused from the gravity and deformation by the mounting force could be less than P-V 0.02λ at 633 nm. The consequence of these demonstrations indicates that the designed mechanical ground supported equipment (MGSE) for the alignment and assembly processes meet the critical requirements for primary mirror assembly of the telescope.

Citation Download Citation

Wei-Cheng Lin, Shenq-Tsong Chang, Sheng-Hsiung Chang, Chen-Peng Chang, Yu-Chuan Lin, Po-Hsuan Huang, Ho-Lin Tsay, Chi-Chieh Chin, Hsu-Pin Pan, and Ting-Ming Huang "Primary mirror alignment and assembly for a multispectral space telescope", Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 888922 (24 October 2013); https://doi.org/10.1117/12.2028951

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

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Mirrors

Monochromatic aberrations

Space telescopes

Optical fabrication

Telescopes

Manufacturing

Optical testing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years