用于毫米波和红外泰斯塔格里亚天文台2.6米望远镜的高性能摆动副反射镜。

High-performance wobbling subreflector for the Millimetre and Infrared Testa Grigia Observatory 2.6-m telescope.

作者信息

Mainella G, de Bernardis P, De Petris M, Mandiello A, Perciballi M, Romeo G

出版信息

Appl Opt. 1996 May 1;35(13):2246-52. doi: 10.1364/AO.35.002246.

DOI:10.1364/AO.35.002246

Abstract

The Millimetre and Infrared Testa Grigia Observatory 2.6-m Cassegrain telescope has been designed to allow high-sensitivity observations in the millimeter spectral range. For this purpose, in order to reduce unwanted contributions from local foregrounds, we adopted a sky-chopping technique, by wobbling the telescope subreflector. We describe the design and performance of the wobbling system, which can endure external forced two and three fields square-wave modulation and includes features such as high frequency, high amplitude, high duty cycle, low microphonics, and high stability.

摘要

毫米波与红外泰斯塔·格里吉亚天文台的2.6米卡塞格伦望远镜专为在毫米波光谱范围内进行高灵敏度观测而设计。为此，为了减少来自本地前景的不必要贡献，我们采用了一种天空斩波技术，即通过摆动望远镜副反射镜来实现。我们描述了摆动系统的设计和性能，该系统能够承受外部强制的二场和三场方波调制，并具有高频、高幅度、高占空比、低微音和高稳定性等特点。