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29 August 2022 Calibration and performance of the MeerLICHT-BlackGEM atmospheric dispersion corrector
Maaike Pierik, Steven Bloemen, Paul M. Vreeswijk, Paul J. Groot, Rik ter Horst
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Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121883Q (2022) https://doi.org/10.1117/12.2629987
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada
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Abstract
The wide-field optical telescopes MeerLICHT and BlackGEM feature an atmospheric dispersion corrector (ADC) which is fully integrated in its three-lens field corrector. Atmospheric dispersion is compensated for through lateral displacement of one of the three lenses. In this contribution, we discuss the on-sky calibration and performance of the ADC of the MeerLICHT telescope. We use a novel technique where we determine the optimal position of the ADC lens by minimising colour-dependent offsets on the astrometry of thousands of stars in an image.
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Maaike Pierik, Steven Bloemen, Paul M. Vreeswijk, Paul J. Groot, and Rik ter Horst "Calibration and performance of the MeerLICHT-BlackGEM atmospheric dispersion corrector", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121883Q (29 August 2022); https://doi.org/10.1117/12.2629987
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KEYWORDS
Calibration
Telescopes
Image quality
Lenses
Refraction
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