22 May 2023 Improving the telescope guiding with field stabilization on the Very Large Telescope/Unit Telescopes
Pascale Hibon, Philippe Duhoux
Author Affiliations +
Abstract

Acquisition and guiding services have been provided at major telescopes in order to improve the quality and efficiency of scientific observations. Field stabilization (FS) is an essential component of the telescope control system. With the arrival of new-generation instruments, the stabilization requirements have increased. Higher correction frequency is required to minimize the residuals. A major re-engineering of the CCD acquisition software now enables an increase of the operational frequency from 25 to 87 Hz. We analyze and discuss the performances of FS at various frequencies on the Very Large Telescope with its 8-m telescopes including the Adaptive 8-m telescope equipped with a deformable secondary mirror. We will report on the analysis of the residuals in function of several operational key parameters, e.g., the loop frequency, the magnitude of the selected telescope guide star, etc. We will also discuss the possible automatization of the FS during night operations.

© 2023 Society of Photo-Optical Instrumentation Engineers (SPIE)
Pascale Hibon and Philippe Duhoux "Improving the telescope guiding with field stabilization on the Very Large Telescope/Unit Telescopes," Journal of Astronomical Telescopes, Instruments, and Systems 9(2), 027002 (22 May 2023). https://doi.org/10.1117/1.JATIS.9.2.027002
Received: 22 July 2022; Accepted: 2 May 2023; Published: 22 May 2023
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KEYWORDS
Telescopes

Signal to noise ratio

Image processing

Windows

Wind speed

Mirrors

Observatories

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