SALT: Active control of the primary mirror with inductive edge sensors

Hitesh Gajjar; John Menzies; David Buckley; Chris Coetzee; Deon Bester; Ockert Strydom; Jonathan Love; Keith Browne

doi:10.1117/12.2234264

8 August 2016 SALT: Active control of the primary mirror with inductive edge sensors

Hitesh Gajjar, John Menzies, David Buckley, Chris Coetzee, Deon Bester, Ockert Strydom, Jonathan Love, Keith Browne

Proceedings Volume 9906, Ground-based and Airborne Telescopes VI; 990639 (2016) https://doi.org/10.1117/12.2234264
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The Southern African Large Telescope (SALT) is a 10-m class 91-segment fixed altitude telescope located at Sutherland, South Africa. The segment alignment is maintained by inductively coupled sensors mounted on Sitall brackets beneath the segments. An extensive period of testing in environmental chambers and on the telescope has been conducted to establish the stability of the sensors and their response to temperature and humidity variations in the telescope chamber. We present some of the test results, including a demonstration of the ability of the sensors to maintain the alignment of the primary mirror over a period of 6 days.

Citation Download Citation

Hitesh Gajjar, John Menzies, David Buckley, Chris Coetzee, Deon Bester, Ockert Strydom, Jonathan Love, and Keith Browne "SALT: Active control of the primary mirror with inductive edge sensors", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990639 (8 August 2016); https://doi.org/10.1117/12.2234264

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