Analysis of the correlation between the long-term variability of photometric zero-point curves and the quality of the primary mirror coatings in 4-m class telescopes

Priscila Pires; Felipe Navarete; Guillermo Damke; Guillermo Dubo

doi:10.1117/12.3020681

25 July 2024 Analysis of the correlation between the long-term variability of photometric zero-point curves and the quality of the primary mirror coatings in 4-m class telescopes

Priscila Pires, Felipe Navarete, Guillermo Damke, Guillermo Dubo

Author Affiliations +

Proceedings Volume 13098, Observatory Operations: Strategies, Processes, and Systems X; 130982M (2024) https://doi.org/10.1117/12.3020681
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

This paper presents an approach to investigate the correlation between the long-term variability of photometric zero-point curves and the quality of the primary mirror coatings in 4-m class telescopes, specifically focusing on Blanco (Cerro Tololo, Chile) and SOAR (Cerro Pachón, Chile), both NOIRLab facilities. Using imaging data acquired with DECam (Blanco) and Goodman High-Throughout Spectrograph (SOAR), we are constructing an extensive dataset comprising observational data taken at similar instrumental conditions, sampling a substantially long period of the telescopes' operations. The analysis involves a comprehensive comparison of the photometric zero-point light curves against the reflectivity curve of the primary mirror of each telescope, taken after each cleaning cycle. This study aims to aid in optimizing maintenance efforts, including scheduling cleaning procedures and re-aluminizing tasks, thereby enhancing the operational efficiency and longevity of the telescopes.

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

Citation Download Citation

Priscila Pires, Felipe Navarete, Guillermo Damke, and Guillermo Dubo "Analysis of the correlation between the long-term variability of photometric zero-point curves and the quality of the primary mirror coatings in 4-m class telescopes", Proc. SPIE 13098, Observatory Operations: Strategies, Processes, and Systems X, 130982M (25 July 2024); https://doi.org/10.1117/12.3020681

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