Opto-mechanical design of ShaneAO: the adaptive optics system for the 3-meter Shane Telescope

C. Ratliff; J. Cabak; D. Gavel; R. Kupke; D. Dillon; E. Gates; W. Deich; J. Ward; D. Cowley; T. Pfister; M. Saylor

doi:10.1117/12.2057064

21 July 2014 Opto-mechanical design of ShaneAO: the adaptive optics system for the 3-meter Shane Telescope

C. Ratliff, J. Cabak, D. Gavel, R. Kupke, D. Dillon, E. Gates, W. Deich, J. Ward, D. Cowley, T. Pfister, M. Saylor

Proceedings Volume 9148, Adaptive Optics Systems IV; 91483B (2014) https://doi.org/10.1117/12.2057064
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

A Cassegrain mounted adaptive optics instrument presents unique challenges for opto-mechanical design. The flexure and temperature tolerances for stability are tighter than those of seeing limited instruments. This criteria requires particular attention to material properties and mounting techniques. This paper addresses the mechanical designs developed to meet the optical functional requirements. One of the key considerations was to have gravitational deformations, which vary with telescope orientation, stay within the optical error budget, or ensure that we can compensate with a steering mirror by maintaining predictable elastic behavior. Here we look at several cases where deformation is predicted with finite element analysis and Hertzian deformation analysis and also tested. Techniques used to address thermal deformation compensation without the use of low CTE materials will also be discussed.

Citation Download Citation

C. Ratliff, J. Cabak, D. Gavel, R. Kupke, D. Dillon, E. Gates, W. Deich, J. Ward, D. Cowley, T. Pfister, and M. Saylor "Opto-mechanical design of ShaneAO: the adaptive optics system for the 3-meter Shane Telescope", Proc. SPIE 9148, Adaptive Optics Systems IV, 91483B (21 July 2014); https://doi.org/10.1117/12.2057064

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