Ms. Brialyn Onodera Profile

Brialyn Onodera

Brialyn Onodera was born and raised on Hawai'i Island where she graduated from Kamehameha Schools Keaʻau campus and her proximity to the telescopes on Maunakea throughout her childhood inspired her to pursue engineering. Brialyn received her B.S. in Mechanical Engineering from the University of Hawaiʻi at Mānoa in 2017, her EMBA from the Shidler College of Business in 2022, and her Professional Engineering license in 2023. Brialyn also served on the Mauna Kea Working Group in 2021 in order to help develop a new governance and management structure for Maunakea. Brialyn has worked at the Daniel K. Inouye Solar Telescope since 2017, where she collaborates with her peers to execute various engineering projects and analyze data in support of telescope operations. One of Brialyn's greatest passions is supporting the visibility and presence of kamaʻāina within STEM projects in Hawaiʻi.

Proceedings Article | 29 August 2022 Presentation + Paper

A follow-up survey and mitigation of the DKIST telescope mount vibrations

Sebastien Poupar, Brialyn Onodera, Paul Jeffers, Barry Poe

Proceedings Volume 12182, 121820S (2022) https://doi.org/10.1117/12.2630477

KEYWORDS: Telescopes, Mirrors, Solar telescopes, MATLAB, Vibrometry

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The NSF's Daniel K. Inouye Solar Telescope (DKIST) is the largest solar telescope in the world, with a 4-m off-axis primary mirror and 16-m rotating coudé laboratory within the telescope pier. Due to its off-axis design, the mount size is equivalent to an on-axis 8-m class telescope. Like other large, complex telescopes, DKIST is affected by vibrations related to its size and several important rotating entities (e.g. enclosure, coudé, telescope mount). However, the DKIST must also disperse a solar heat load of 13kW, using a complex thermal design supplemented by several additional vibration sources. The diffraction limit of the telescope makes the optical error budget very tight, with the allotted budget for vibrations jitter set as low as 70 milli-arcsec. This translates to a few hundred nanometers RMS on certain mirrors, with the impact of jitter on on-sky image motion varying relative to the mirror position in the optical path. The DKIST recently celebrated the end of its construction phase in November 2021, enabling the start of operations and allowing science programs to be started. Vibrations data recording and management has become part of the telescope verification during observing, enabling early detection of new frequency peaks and amplitude increases in known frequencies. Previous vibrations surveys at DKIST were conducted by William McBride who has proposed and presented an allocations budget per location in 2018, implemented and measured various paths analyses, and linked those results to the AO system. As the transition to operations progressed and operations continues, several vibration sources have been activated. Comparisons of current vibration levels to the previous budget is ongoing in order to identify where solutions to improve performance and facilitate AO correction are required. We were notified of two strong frequencies (40 Hz and 80 Hz) contributing significantly to image motion, identified within the High Order Adaptive Optics (HOAO) performance report. Presented herein is the process used to identify the source of that vibration by building a knowledge base of the telescope’s vibration signature, and using data identification of the problematic peaks to find the vibration hardware’s source. An improved design was then engineered, tested and implemented. Finally, by comparing results to prior HOAO measurements, the improvement in performance can be quantified.

Proceedings Article | 29 August 2022 Presentation + Paper

The National Science Foundation’s Daniel K. Inouye Solar Telescope: status and first results

Thomas Rimmele, Mark Warner, Roberto Casini, Jeffery Kuhn, Haosheng Lin, Friedrich Wöger, Alexandra Tritschler, Alisdair Davey, Alfred de Wijn, Andre Fehlmann, David Harrington, Sarah Jaeggli, Thomas Schad, Tetsu Anan, Christian Beck, Heather Marshall, Paul Jeffers, Andrew Beard, David Berst, Eric Cross, Bryan Cummings, Colleen Donneley, Arthur Eigenbrot, Andrew Ferayorni, Christopher Foster, Chriselle Ann Galapon, Bret Goodrich, Brian Gregory, Stephanie Guzman, Stephen Guzzo, John Hubbard, Erik Johansson, Luke Johnson, Mary Liang, Brialyn Onodera, Myles Puentes, Lukas Rimmele, Erik Starman, Stacey Sueoka, Richard Summers, Aimee Szabo, Louis Szabo, Timothy Williams, Charles White

Proceedings Volume 12182, 121820Z (2022) https://doi.org/10.1117/12.2644469

KEYWORDS: Adaptive optics, Solar telescopes, Telescopes, Mirrors, Visible radiation, Solar processes, Magnetism, Sun, Polarization, Polarimetry

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Proceedings Article | 13 December 2020 Poster + Paper

Developing an install plan for the DKIST carousel cooling system

Brialyn Onodera, James Hoag, Chriselle Galapon Nagata

Proceedings Volume 11445, 1144541 (2020) https://doi.org/10.1117/12.2560893

KEYWORDS: Cooling systems, Solar telescopes, Cladding, Mirrors, Sun, Telescopes, Control systems, Solar radiation, Camera shutters

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