Simulation and laboratory demonstration of measurement and mitigation of dome seeing

[摘要] Ground layer turbulence is seen to be dominant at most telescope sites. Some fraction of this is caused by the interaction of the telescope dome and structure with the surrounding environment, leading to mixing of air at different temperatures, and hence, optical perturbations. Here we investigate the use of laminar air flow in the form of air curtains to reduce this mixing. We provide laboratory measurements of the effect of mixing and its mitigation, and detail the steps that can be taken to reduce this effect. Application for telescope dome structures is developed.

[发布机构] Department of Physics, South Road, Durham; DH1 3LE, United Kingdom^1

[效力级别] 地球科学

[关键词] Dome seeing;Dome structure;Ground layer;Laboratory demonstrations;Laboratory measurements;Laminar airflow;Surrounding environment