CaltechAUTHORS
  A Caltech Library Service

Thirty Meter Telescope (TMT) Narrow Field Infrared Adaptive Optics System (NFIRAOS) real-time controller preliminary architecture

Kerley, Dan and Smith, Malcolm and Dunn, Jennifer and Herriot, Glen and Véran, Jean-Pierre and Boyer, Corinne and Ellerbroek, Brent and Gilles, Luc and Wang, Lianqi (2016) Thirty Meter Telescope (TMT) Narrow Field Infrared Adaptive Optics System (NFIRAOS) real-time controller preliminary architecture. In: Software and Cyberinfrastructure for Astronomy IV. Proceedings of SPIE. No.9913. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 99134J. ISBN 978-1-5106-0205-2. http://resolver.caltech.edu/CaltechAUTHORS:20170110-110727391

[img] PDF - Published Version
See Usage Policy.

689Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20170110-110727391

Abstract

The Narrow Field Infrared Adaptive Optics System (NFIRAOS) is the first light Adaptive Optics (AO) system for the Thirty Meter Telescope (TMT). A critical component of NFIRAOS is the Real-Time Controller (RTC) subsystem which provides real-time wavefront correction by processing wavefront information to compute Deformable Mirror (DM) and Tip/Tilt Stage (TTS) commands. The National Research Council of Canada - Herzberg (NRC-H), in conjunction with TMT, has developed a preliminary design for the NFIRAOS RTC. The preliminary architecture for the RTC is comprised of several Linux-based servers. These servers are assigned various roles including: the High-Order Processing (HOP) servers, the Wavefront Corrector Controller (WCC) server, the Telemetry Engineering Display (TED) server, the Persistent Telemetry Storage (PTS) server, and additional testing and spare servers. There are up to six HOP servers that accept high-order wavefront pixels, and perform parallelized pixel processing and wavefront reconstruction to produce wavefront corrector error vectors. The WCC server performs low-order mode processing, and synchronizes and aggregates the high-order wavefront corrector error vectors from the HOP servers to generate wavefront corrector commands. The Telemetry Engineering Display (TED) server is the RTC interface to TMT and other subsystems. The TED server receives all external commands and dispatches them to the rest of the RTC servers and is responsible for aggregating several offloading and telemetry values that are reported to other subsystems within NFIRAOS and TMT. The TED server also provides the engineering GUIs and real-time displays. The Persistent Telemetry Storage (PTS) server contains fault tolerant data storage that receives and stores telemetry data, including data for Point-Spread Function Reconstruction (PSFR).


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.2233709DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2543646PublisherArticle
Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE). The TMT Project gratefully acknowledges the support of the TMT collaborating institutions. They are the California Institute of Technology, the University of California, the National Astronomical Observatory of Japan, the National Astronomical Observatories of China and their consortium partners, the Department of Science and Technology of India and their supported institutes, and the National Research Council of Canada. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the Association of Canadian Universities for Research in Astronomy (ACURA), the Association of Universities for Research in Astronomy (AURA), the U.S. National Science Foundation, the National Institutes of Natural Sciences of Japan, and the Department of Atomic Energy of India.
Group:Thirty Meter Telescope
Funders:
Funding AgencyGrant Number
CaltechUNSPECIFIED
University of CaliforniaUNSPECIFIED
National Astronomical Observatory of JapanUNSPECIFIED
National Astronomical Observatories of ChinaUNSPECIFIED
Department of Science and Technology (India)UNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Canada Foundation for InnovationUNSPECIFIED
Ontario Ministry of Research and InnovationUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
British Columbia Knowledge Development FundUNSPECIFIED
Association of Canadian Universities for Research in Astronomy (ACURA)UNSPECIFIED
Association of Universities for Research in Astronomy (AURA)UNSPECIFIED
NSFUNSPECIFIED
National Institutes of Natural Sciences of JapanUNSPECIFIED
Department of Atomic Energy (India)UNSPECIFIED
Record Number:CaltechAUTHORS:20170110-110727391
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170110-110727391
Official Citation: Dan Kerley ; Malcolm Smith ; Jennifer Dunn ; Glen Herriot ; Jean-Pierre Véran ; Corinne Boyer ; Brent Ellerbroek ; Luc Gilles ; Lianqi Wang; Thirty Meter Telescope (TMT) Narrow Field Infrared Adaptive Optics System (NFIRAOS) real-time controller preliminary architecture . Proc. SPIE 9913, Software and Cyberinfrastructure for Astronomy IV, 99134J (August 8, 2016); doi:10.1117/12.2233709.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73370
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:10 Jan 2017 19:30
Last Modified:10 Jan 2017 19:30

Repository Staff Only: item control page