LOTUCE2: a dome-seeing instrument for the E-ELT

Amokrane Berdja; Dani Guzman; Norman Saez; Nicole David; Nicolás Dubost; Marc Sarazin; Aziz Ziad

doi:10.1117/12.2056270

28 July 2014 LOTUCE2: a dome-seeing instrument for the E-ELT

Amokrane Berdja, Dani Guzman, Norman Saez, Nicole David, Nicolás Dubost, Marc Sarazin, Aziz Ziad

Proceedings Volume 9147, Ground-based and Airborne Instrumentation for Astronomy V; 91479R (2014) https://doi.org/10.1117/12.2056270
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

Free-atmosphere, and surface-layer optical-turbulence have been extensively monitored over the years. The optical-turbulence inside a telescope enclosure en the other hand has yet to be as fully characterized. For this latest purpose, an experimental concept, LOTUCE (LOcal TUrbulenCe Experiment) has been developed in order to measure and characterise the so-called dome-seeing. LOTUCE2 is an upgraded prototype whose main aim is to measure optical turbulence characteristics more precisely by minimising cross-contamination of signals. This characterisation is both quantitative (optical turbulence strength) and qualitative (assessing the optical turbulence statistical model). We present the new opto-mechanical design, with the theoretical capabilities and limitations to the actual models.

Citation Download Citation

Amokrane Berdja, Dani Guzman, Norman Saez, Nicole David, Nicolás Dubost, Marc Sarazin, and Aziz Ziad "LOTUCE2: a dome-seeing instrument for the E-ELT", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91479R (28 July 2014); https://doi.org/10.1117/12.2056270

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