CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 12185 > Article
Presentation
29 August 2022 Linearized Analytical Phase Diversity : towards lab and on-sky demonstration on the Subaru Telescope
Sébastien B. Vievard, Aurélie Bonnefois, Frédéric Cassaing, Laurent M. Mugnier, Jean-François Sauvage, Olivier Guyon, Julien Lozi, Vincent Deo, Kyohoon Ahn, Nour Skaf
Author Affiliations +
Proceedings Volume 12185, Adaptive Optics Systems VIII; 121850W (2022) https://doi.org/10.1117/12.2629122
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada
Abstract
Pupil fragmentation can result either from spider shadow or segmented primary mirrors. In both cases, differential low order aberrations (piston, tip or tilt) between the fragments lead to degrading high contrast instrument performance, since current Extreme Adaptive Optics sensors cannot properly sense them. Convinced that Focal Plane Wavefront Sensing is one great solution to deal with pupil phase discontinuities, we have been testing the Linearized Analytical Phase Diversity (LAPD) algorithm on SCExAO at the Subaru Telescope. This talk will recall advantages of LAPD in terms of capture range and speed. We will present lab demonstrations of LAPD both for Island Effect correction and segment cophasing on two different testbeds. Results of lambda/75 RMS cophasing error will be presented as a stepping stone for TMT cophasing. Lastly, we will present the first on-sky demonstration of LAPD on the Subaru Telescope.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Sébastien B. Vievard, Aurélie Bonnefois, Frédéric Cassaing, Laurent M. Mugnier, Jean-François Sauvage, Olivier Guyon, Julien Lozi, Vincent Deo, Kyohoon Ahn, and Nour Skaf "Linearized Analytical Phase Diversity : towards lab and on-sky demonstration on the Subaru Telescope", Proc. SPIE 12185, Adaptive Optics Systems VIII, 121850W (29 August 2022); https://doi.org/10.1117/12.2629122
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Telescopes
Large telescopes
Sensors
Adaptive optics
Analytical research
Cameras
Exoplanets
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top