The latency measurement of wavefront sensor camera and its impact on the performance of an adaptive optical system

Jessica R. Zheng; Michael Goodwin; Barnaby Norris

doi:10.1117/12.2311897

11 July 2018 The latency measurement of wavefront sensor camera and its impact on the performance of an adaptive optical system

Jessica R. Zheng, Michael Goodwin, Barnaby Norris

Author Affiliations +

Proceedings Volume 10703, Adaptive Optics Systems VI; 107035I (2018) https://doi.org/10.1117/12.2311897
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

Following the on-sky demonstration of our adaptive optics system test-bench on the 3.9m Anglo-Australian Telescope (AAT), we did a analysis of the system performance. It was found that the wavefront sensor camera latency to be the major limiting factor rather than the number of deformable mirror actuators or wavefront subapertures. We then designed a experimental setup to accurately measure the latency. In this paper, we present a robust method to measure the latency for two popular cameras used in the adaptive optics community, namely the Andor Zyla camera sCMOS camera and the iXON Ultra 888 EMCCD camera. From our measurements, it is shown that the latency of the two cameras can vary quite lot depending on their operation modes. We present our methodology and latency results.

Citation Download Citation

Jessica R. Zheng, Michael Goodwin, and Barnaby Norris "The latency measurement of wavefront sensor camera and its impact on the performance of an adaptive optical system", Proc. SPIE 10703, Adaptive Optics Systems VI, 107035I (11 July 2018); https://doi.org/10.1117/12.2311897

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