Design of DTMS operational software for high-precision flatness measurement in cryogenic chamber

Xing-bo Wang; Yi-hao Zhang; Hong-fei Zhang; Jun Zhang; Jian Wang

doi:10.1117/12.3018532

26 August 2024 Design of DTMS operational software for high-precision flatness measurement in cryogenic chamber

Xing-bo Wang, Yi-hao Zhang, Hong-fei Zhang, Jun Zhang, Jian Wang

Author Affiliations +

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 131006Z (2024) https://doi.org/10.1117/12.3018532
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

For giant telescopes using mosaic technology, the flatness of the Mosaic Focal Plane Arrays (MFPAs) is an important determinant of their image quality. In order to measure the flatness through the flat dewar window of cryogenic chamber, a measurement system called differential triangulation measurement system (DTMS) is designed. The DTMS mainly includes four parts: a displacement platform, two laser triangulation sensors, the connecting structure and an optical flat as reference surface. To operate DTMS, an operational software system is developed. The operational software consists of the control and processing software developed by QT, the displacement platform control module realized by PLC and the sensor control module. Through the operational software, users can easily operate the DTMS to scan the MFPAs and calculate the flatness. As for data processing, it is implemented based on the Progressive Sample Consensus (PROSAC) algorithm which can reduce the effect of anomalous data points on flatness calculation. The DTMS and its operational software have been used to measure the flatness of the Wide Field Survey Telescope (WFST).

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xing-bo Wang, Yi-hao Zhang, Hong-fei Zhang, Jun Zhang, and Jian Wang "Design of DTMS operational software for high-precision flatness measurement in cryogenic chamber", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 131006Z (26 August 2024); https://doi.org/10.1117/12.3018532

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