On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system

Lisa A. Poyneer; Robert J. De Rosa; Bruce Macintosh; David W. Palmer; Marshall D. Perrin; Naru Sadakuni; Dmitry Savransky; Brian Bauman; Andrew Cardwell; Jeffrey K. Chilcote; Daren Dillon; Donald Gavel; Stephen J. Goodsell; Markus Hartung; Pascale Hibon; Fredrik T. Rantakyrö; Sandrine Thomas; Jean-Pierre Veran

doi:10.1117/12.2057092

21 July 2014 On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system

Lisa A. Poyneer, Robert J. De Rosa, Bruce Macintosh, David W. Palmer, Marshall D. Perrin, Naru Sadakuni, Dmitry Savransky, Brian Bauman, Andrew Cardwell, Jeffrey K. Chilcote, Daren Dillon, Donald Gavel, Stephen J. Goodsell, Markus Hartung, Pascale Hibon, Fredrik T. Rantakyrö, Sandrine Thomas, Jean-Pierre Veran

Author Affiliations +

Proceedings Volume 9148, Adaptive Optics Systems IV; 91480K (2014) https://doi.org/10.1117/12.2057092
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The Gemini Planet Imager instrument's adaptive optics (AO) subsystem was designed specifically to facilitate high-contrast imaging. It features several new technologies, including computationally efficient wavefront reconstruction with the Fourier transform, modal gain optimization every 8 seconds, and the spatially filtered wavefront sensor. It also uses a Linear-Quadratic-Gaussian (LQG) controller (aka Kalman filter) for both pointing and focus. We present on-sky performance results from verification and commissioning runs from December 2013 through May 2014. The efficient reconstruction and modal gain optimization are working as designed. The LQG controllers effectively notch out vibrations. The spatial filter can remove aliases, but we typically use it oversized by about 60% due to stability problems.

Citation Download Citation

Lisa A. Poyneer, Robert J. De Rosa, Bruce Macintosh, David W. Palmer, Marshall D. Perrin, Naru Sadakuni, Dmitry Savransky, Brian Bauman, Andrew Cardwell, Jeffrey K. Chilcote, Daren Dillon, Donald Gavel, Stephen J. Goodsell, Markus Hartung, Pascale Hibon, Fredrik T. Rantakyrö, Sandrine Thomas, and Jean-Pierre Veran "On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480K (21 July 2014); https://doi.org/10.1117/12.2057092

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