Alignment and tolerancing of a mirror relay system for a newly upgraded LGS system on Subaru Telescope

Marita Morris; Yosuke Minowa; Yoshiyuki Doi; Hiroshige Yoshida; Etsuko Mieda

doi:10.1117/12.2563168

13 December 2020 Alignment and tolerancing of a mirror relay system for a newly upgraded LGS system on Subaru Telescope

Marita Morris, Yosuke Minowa, Yoshiyuki Doi, Hiroshige Yoshida, Etsuko Mieda

Proceedings Volume 11448, Adaptive Optics Systems VII; 114486S (2020) https://doi.org/10.1117/12.2563168
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

Subaru telescope is currently in the process of upgrading its laser guide star (LGS) system. The newest upgrade will have a TOPTICA SodiumStar laser source (operates at ~22W and 589nm) which is then sent to a laser launch telescope (LLT) just behind the secondary mirror of the telescope. In order to send the laser light to the LLT, a system of 6 mirrors has been designed to relay the laser light. Since the distances between these mirrors are quite large (the largest is ~9m), it was necessary to model the system in order to determine the correct placement and proper alignment procedure of each of these mirrors. For simplicity, the complete mirror relay system (including parts of the LLT up to the beam expander lens) has been modeled as an 8 mirror system in order to complete a tolerance analysis. The results of this analysis suggest that alignment of the system should be possible to do with a simple pinhole alignment procedure.

Citation Download Citation

Marita Morris, Yosuke Minowa, Yoshiyuki Doi, Hiroshige Yoshida, and Etsuko Mieda "Alignment and tolerancing of a mirror relay system for a newly upgraded LGS system on Subaru Telescope", Proc. SPIE 11448, Adaptive Optics Systems VII, 114486S (13 December 2020); https://doi.org/10.1117/12.2563168

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