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

Jessica R. Zheng, Michael Goodwin, B. Norris

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

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.
Original languageEnglish
Title of host publicationAdaptive Optics Systems VI
EditorsLaird M. Close, Laura Schreiber, Dirk Schmidt
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-11
Number of pages11
ISBN (Electronic)9781510619609
ISBN (Print)9781510619593
DOIs
Publication statusPublished - 11 Jul 2018
EventAdaptive Optics Systems VI - Austin, Texas, United States
Duration: 10 Jun 201815 Jun 2018

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume10703
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdaptive Optics Systems VI
CountryUnited States
CityAustin, Texas
Period10/06/1815/06/18

Keywords

  • latency
  • adaptive optics
  • close loop

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