Simulations of (MC)AO for a 100-m telescope

Miska Le Louarn; Christophe Verinaud; Natalia Yaitskova; Visa Korkiakoski; Enrico Fedrigo; Norbert N. Hubin

doi:10.1117/12.551079

25 October 2004 Simulations of (MC)AO for a 100-m telescope

Miska Le Louarn, Christophe Verinaud, Natalia Yaitskova, Visa Korkiakoski, Enrico Fedrigo, Norbert N. Hubin

Proceedings Volume 5490, Advancements in Adaptive Optics; (2004) https://doi.org/10.1117/12.551079
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

In this paper, we summarize the analysis made on various Adaptive Optics (AO) modes (including Shack-Hartmann (SH) and Pyramid Wavefront Sensors (PWS)) for the OverWhelmingly Large telescope (OWL). We will show some early results of the performance to be expected with a first generation AO system, working in the infrared. Several telescope diameters were considered to see the variations as a function of telescope diameter. This is also compatible with the concept of "grow a telescope" where the telescope diameter of OWL grows from 60m to 100m as a function of time. In a first phase, to simplify the problem, the effects of the central obstruction were neglected. However, for the Shack-Hartmann (SH) simulations, additional simulations were carried out with a simulated OWL pupil, including segmentation errors. We show some early results for a ground-layer correction system, working with three natural guide stars (NGSs) and a single deformable mirror (DM). An MCAO system based on 2 DMs, 3 NGSs is also investigated. For the last two systems, our results are found to be in very good agreement with Cibola, an analytical AO modeling tool. We show that some outer scale of turbulence effects improve slightly the correction quality when going from a telescope diameter of 10m to 100m.

Citation Download Citation

Miska Le Louarn, Christophe Verinaud, Natalia Yaitskova, Visa Korkiakoski, Enrico Fedrigo, and Norbert N. Hubin "Simulations of (MC)AO for a 100-m telescope", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); https://doi.org/10.1117/12.551079

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