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arXiv 1407.2193astro-ph.IM
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一种无损耗纯被动大气色散校正的宽视场校正器

A wide field corrector with loss-less and purely passive atmospheric dispersion correction

Peter Gillingham, Will Saunders

摘要:

本文介绍了VISTA 4米望远镜卡塞格伦焦点的2.5 °视场直径校正透镜的设计。它包括四个具有高紫外线透射率的单一玻璃元件,所有玻璃元件都是轴对称的,以便在天顶操作。一个元件横向移动以提供大气色散校正。对于VISTA应用尤其有利的一个关键特性是,ADC元件可以安装在重力驱动下,因此其操作不需要电机、编码器、电缆或软件控制。一个简单的机械设计,以实现这一点和光学性能的细节。

英文摘要:

A 2.5 degree field diameter corrector lens design for the Cassegrain focus of the VISTA 4 meter telescope is presented. It comprises four single elements of glasses with high UV transmission, all axi-symmetric for operation at the zenith. One element is displaced laterally to provide atmospheric dispersion correction. A key feature, especially beneficial for the VISTA application, is that the ADC element can be mounted so it is driven simply by gravity; thus its operation needs no motors, encoders, cabling, or software control. A simple mechanical design to achieve this and the optical performance details are described.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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