The DKIST Vibrometer: a high-speed camera system to identify image jitter

Stacey R. Sueoka; Isabelle F. Scholl; David M. Harrington; Luke C. Johnson; Dirk Schmidt

doi:10.1117/12.3020641

11 September 2024 The DKIST Vibrometer: a high-speed camera system to identify image jitter

Stacey R. Sueoka, Isabelle F. Scholl, David M. Harrington, Luke C. Johnson, Dirk Schmidt

Proceedings Volume 13094, Ground-based and Airborne Telescopes X; 130944Q (2024) https://doi.org/10.1117/12.3020641
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The NSF’s Daniel K Inouye Solar Telescope (DKIST) is the world’s largest solar telescope at the summit of Haleakalā. All large observatories are subject to the negative impacts of vibrations, therefore, one of the goals during the operations and commissioning phase is to collect data to identify and mitigate image jitter. DKIST has five high spatial resolution facility instruments spread across a 16-meter rotating platform. Vibration sources such as moving instrument components, environmental control systems, and active optics can induce image jitter differently across large distances, causing non-common path errors uncorrectable by AO systems. We built a new tool called the Vibrometer, a high speed image tracker designed to measure image motion in order to assess the system optical vibrations at 2kHz rates. We will present how the Vibrometer played a vital role in eliminating the image jitter observed in the Visible Spectro-Polarimeter (ViSP) instrument's slit scanning images. The image jitter was caused by mechanical motion of the Visible Broadband Imager's (VBI) large two-axes camera stage while performing image mosaic scans during simultaneous measurements.

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

Citation Download Citation

Stacey R. Sueoka, Isabelle F. Scholl, David M. Harrington, Luke C. Johnson, and Dirk Schmidt "The DKIST Vibrometer: a high-speed camera system to identify image jitter", Proc. SPIE 13094, Ground-based and Airborne Telescopes X, 130944Q (11 September 2024); https://doi.org/10.1117/12.3020641

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