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10 July 2018 Dome seeing sensitivity analysis for LSST
Konstantinos Vogiatzis, Bo Xin, Chuck Claver, George Z. Angeli, Brian Selvy
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Proceedings Volume 10705, Modeling, Systems Engineering, and Project Management for Astronomy VIII; 1070503 (2018) https://doi.org/10.1117/12.2312852
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States
Abstract
High spatial resolution thermal unsteady CFD simulations of LSST are performed and processed to provide image degradation due to dome seeing in FWHM. An analysis of the sensitivity of the image quality to certain important geometric features and aerothermal properties is presented. More specifically, the influence of the LSST vent light baffles and windscreen, the wind speed and the surface temperature of components such as the primary and secondary mirrors, the camera, the telescope structure and dome exterior is assessed and conclusions are drawn. The secondary mirror and camera surface temperatures are found to be among the most critical in minimizing LSST dome seeing.
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Konstantinos Vogiatzis, Bo Xin, Chuck Claver, George Z. Angeli, and Brian Selvy "Dome seeing sensitivity analysis for LSST", Proc. SPIE 10705, Modeling, Systems Engineering, and Project Management for Astronomy VIII, 1070503 (10 July 2018); https://doi.org/10.1117/12.2312852
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KEYWORDS
Large Synoptic Survey Telescope
Domes
Telescopes
Thermal modeling
Image quality
Turbulence
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