TMT NFIRAOS deformable mirror electronics FPGA firmware design

Erning Zhao; Krzysztof Caputa; Glen Herriot; Zoran Ljusic

doi:10.1117/12.3021724

11 September 2024 TMT NFIRAOS deformable mirror electronics FPGA firmware design

Erning Zhao, Krzysztof Caputa, Glen Herriot, Zoran Ljusic

Author Affiliations +

Proceedings Volume 13094, Ground-based and Airborne Telescopes X; 130944V (2024) https://doi.org/10.1117/12.3021724
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The NFIRAOS Deformable Mirror Electronics (NDME) system is integral to the Narrow Field InfraRed Adaptive Optics System (NFIRAOS) of the Thirty Meter Telescope (TMT). Using two sets of deformable mirrors to correct wavefront aberrations, the NDME converts stroke commands from the NFIRAOS Real-Time Controller (NRTC) into precise actuator drive voltages. The NDME FPGA firmware enables real-time functionality, handling concurrent command processing with strict timing requirements. It incorporates low-latency SPI for DAC and ADC and custom 1G Ethernet interfaces. Benchmarking with the Xilinx Kria K26 FPGA demonstrates the firmware's efficiency in managing data transmission and processing latencies adhering to a critical 75-microsecond threshold. These results validate the firmware's efficiency, robustness, and reliability, which are crucial for the TMT project's success.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Erning Zhao, Krzysztof Caputa, Glen Herriot, and Zoran Ljusic "TMT NFIRAOS deformable mirror electronics FPGA firmware design", Proc. SPIE 13094, Ground-based and Airborne Telescopes X, 130944V (11 September 2024); https://doi.org/10.1117/12.3021724

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