Cornelis Zwaan, open principle, and the future of high-resolution solar telescopes

被引：0

作者：

Hammerschlag, Robert H. ^{[1
]}

Bettonvil, Felix C. M. ^{[1
]}

Jagers, Aswin P. L. ^{[1
]}

Sliepen, Guus ^{[1
]}

机构：

[1] Univ Utrecht, Astron Inst, NL-3584 CC Utrecht, Netherlands

来源：

GROUND-BASED AND AIRBORNE TELESCOPES II, PTS 1-3 | 2008年 / 7012卷

关键词：

solar telescopes; open-telescope principle; wind flushing; stiff constructions; high spatial resolution; day- and nighttime seeing; ground effects; open towers;

D O I：

10.1117/12.789944

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It was in the years around 1970 that during site-test campaigns for JOSO masts were erected up till 30 in height with sensors at several heights for the measurement of temperature fluctuations. Cornelis (Kees) Zwaan discovered that the fluctuations decrease drastically at heights from about 15 m and upward when there is some wind. The conclusion from this experience was the open telescope principle: the telescope should be completely free in the air 15 m or more above the ground. The Dutch Open Telescope (DOT) was the pioneering demonstrator of the open-telescope technology. Now that larger high-resolution telescopes come in view, it is time to analyze again the principle: (i) the essentials for proper working of the open principle; (ii) the differences with nighttime observations particularly concerning the seeing; (W) the design consequences for the new generation of high-resolution solar telescopes.

引用

页数：12

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