Subreflector adjustment system for NSRT

Binbin Xiang; Na Wang; Maozheng Chen; Yusup Aili; Qian Xu; Fei Xue; Guljaina Hazezhan; Dalin He; Zhigang Wen

doi:10.1117/12.2315172

6 July 2018 Subreflector adjustment system for NSRT

Binbin Xiang, Na Wang, Maozheng Chen, Yusup Aili, Qian Xu, Fei Xue, Guljaina Hazezhan, Dalin He, Zhigang Wen

Proceedings Volume 10700, Ground-based and Airborne Telescopes VII; 107002E (2018) https://doi.org/10.1117/12.2315172
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The Nanshan radio telescope (NSRT) is a fully steerable radio telescope with a diameter of 26 meters, located in Urumqi, Xinjiang, China. The NSRT currently operate in the frequency range from 1.4 GHz to 22.4 GHz。In order to reduce effect of gravity-induced structural deformations on antenna efficiency and pointing accuracy, the subreflector adjustment system has been used to adjust subreflector position in 6 degree-of-freedom to correct subreflector defocusing and reflectors misalignment. The Stewart platform is used as the adjustment mechanism to perform translation -50/+50 mm (along x, y, z axis) and rotation -5/+5 degree (with respect to x, y axis) with repeated positioning accuracies of 0.07 mm (translation) and 0.01 degree (rotation). The paper will mainly introduce an overview of the NSRT subreflector adjustment system, including Stewart platform and control system, performance testing, and position adjustment of subreflector.

Citation Download Citation

Binbin Xiang, Na Wang, Maozheng Chen, Yusup Aili, Qian Xu, Fei Xue, Guljaina Hazezhan, Dalin He, and Zhigang Wen "Subreflector adjustment system for NSRT", Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 107002E (6 July 2018); https://doi.org/10.1117/12.2315172

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