Improving the telescope guiding with field stabilization on the VLT/UTs

P. Hibon; P. Duhoux

doi:10.1117/12.2628913

29 August 2022 Improving the telescope guiding with field stabilization on the VLT/UTs

P. Hibon, P. Duhoux

Proceedings Volume 12186, Observatory Operations: Strategies, Processes, and Systems IX; 121860C (2022) https://doi.org/10.1117/12.2628913
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Acquisition and guiding services have been provided at major telescopes in order to improve the quality and efficiency of Field Stabilization 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 87Hz. In this paper we analyze and discuss the performances of field stabilization at various frequencies on the VLT 8m 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.

Citation Download Citation

P. Hibon and P. Duhoux "Improving the telescope guiding with field stabilization on the VLT/UTs", Proc. SPIE 12186, Observatory Operations: Strategies, Processes, and Systems IX, 121860C (29 August 2022); https://doi.org/10.1117/12.2628913

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