Optics of Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII): delay lines and alignment
Optics of Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII): delay lines and alignment
复制标题
用于红外干涉测量的气球实验双望远镜 (BETTII) 的光学系统：延迟线和对准
DOI：
10.1117/12.2230218
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
C. Tucker
中科院分区：
文献类型：
--
作者：
A. Dhabal;S. Rinehart;M. Rizzo;L. Mundy;D. Fixsen;H. Sampler;E. Mentzell;T. Veach;R. Silverberg;S. Furst;T. Dow;P. Ade;C. Tucker
介绍了红外干涉测量用气球实验望远镜（BETTII）的光学系统。BETTII是一个8米基线远红外（30-90微米）干涉仪使命，具有空间分辨光谱学能力，旨在研究星星的形成和星系演化。该仪器从两个臂收集光，使它们干涉，将它们分成两个科学通道（30-50 μm和60-90 μm），并将它们聚焦到探测器上。它还分离出近红外光（1-2.5 μm），并将其用于望远镜指向的倾斜校正。目前，所有的光学元件都已经被制造、热处理、适当地涂覆并安装在它们各自的组件上。我们提出的光学设计的挑战，这样的气球载空间光谱干涉仪，并讨论如何减轻他们。温延迟线和冷延迟线是该光学系统的重要组成部分。热延迟线校正由于气球摆动而导致的左右臂之间的路径长度差异，而冷延迟线旨在引入系统路径长度差异，从而生成我们的干涉图，从中我们可以获得有关光谱的信息。文中还讨论了它们的设计细节和这些光机部件的测试结果。利用FRED软件包进行模拟，确定了不同光学元件对所产生的干涉图的灵敏度。因此，制定了一个对准计划，利用激光跟踪仪，坐标测量机，经纬仪和LUPI干涉仪。
We present the optics of Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII) as it gets ready for launch. BETTII is an 8-meter baseline far-infrared (30-90 μm) interferometer mission with capabilities of spatially resolved spectroscopy aimed at studying star formation and galaxy evolution. The instrument collects light from its two arms, makes them interfere, divides them into two science channels (30-50 μm and 60-90 μm), and focuses them onto the detectors. It also separates out the NIR light (1-2.5 μm) and uses it for tip-tilt corrections of the telescope pointing. Currently, all the optical elements have been fabricated, heat treated, coated appropriately and are mounted on their respective assemblies. We are presenting the optical design challenges for such a balloon borne spatio- spectral interferometer, and discuss how they have been mitigated. The warm and cold delay lines are an important part of this optics train. The warm delay line corrects for path length differences between the left and the right arm due to balloon pendulation, while the cold delay line is aimed at introducing a systematic path length difference, thereby generating our interferograms from where we can derive information about the spectra. The details of their design and the results of the testing of these opto-mechanical parts are also discussed. The sensitivities of different optical elements on the interferograms produced have been determined with the help of simulations using FRED software package. Accordingly, an alignment plan is drawn up which makes use of a laser tracker, a CMM, theodolites and a LUPI interferometer.
大卫·H·德雷斯勒，1941-2014。
影响因子：
30.8
作者：
Potter,Huntington
通讯作者：
Potter,Huntington
通过国际协调努力推进空间远红外干涉测量
DOI：
10.1117/12.2024432
发表时间：
2013
期刊：
--
影响因子：
--
作者：
Leisawitz D
通讯作者：
Leisawitz D
用于红外干涉测量的气球实验双望远镜（BETTII）：远红外高角分辨率实验
影响因子：
3.5
作者：
Rinehart S
通讯作者：
Rinehart S