为分段镜望远镜原型开发校准装置

IF 1.7 3区 工程技术 Q2 ENGINEERING, AEROSPACE
Radhika Dharmadhikari, Padmakar Parihar, Mohammed Muthahar Rafeeq Ahmed, Govinda Koravangala Venkatapathaiah, Madan Mohan Kemkar, Himanshu Kunjam
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引用次数: 0

摘要

分段镜望远镜原型是一个 1.3 米孔径的七段望远镜,正在作为印度大型光学-红外望远镜项目的技术演示器进行开发。针对这台分段镜望远镜,设计并开发了一种基于夏克-哈特曼传感器的校准装置。该装置不仅能精确捕捉分段错位,还能以几微米的精度测量分段聚焦误差,从而有助于镜片的尖端倾斜校正和共同聚焦。该设备主要在两种不同的模式下工作:夏克-哈特曼模式和成像模式。完成校准程序后,可在成像模式下检查最终图像质量。该设备的设计还可以用一对镜片进行凯克相位实验。为了使该装置具有成本效益,只使用了现成的部件。我们使用 Zemax 和 SolidWorks 软件对该装置进行了光学设计和光学机械分析。然后,在实验室中实现了该装置并对其进行了大量测试。在此,我们介绍了光学机械设计和分析的细节,以及在实验室进行的性能测试的初步结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of an alignment device for the Prototype Segmented Mirror Telescope
The Prototype Segmented Mirror Telescope is a 1.3 m aperture, seven segment telescope, being developed as a technology demonstrator for India’s large optical-IR telescope project. For this segmented mirror telescope, a Shack Hartmann sensor based alignment device has been designed and developed. The device not only precisely captures the segment misalignment but also measures the segment focus error with an accuracy of a few microns and hence helps in the tip-tilt correction and co-focusing of the mirror segments. The device is designed to work primarily in two different modes: the Shack–Hartmann mode and the imaging mode. After completion of the alignment procedure, the final image quality can be checked in the imaging mode. The device is designed in such a way that it also has a provision to conduct the Keck kind of phasing experiment with one pair of mirror segments. To make the device cost effective, only off-the-shelf components are used. The optical design and opto-mechanical analysis of the device were carried out using Zemax and SolidWorks software. Then, the device was realized and its extensive testing was carried out in the laboratory. Here, we have presented the details of the opto-mechanical design and analysis as well as the preliminary results of performance tests conducted in the laboratory.
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来源期刊
CiteScore
4.40
自引率
13.00%
发文量
119
期刊介绍: The Journal of Astronomical Telescopes, Instruments, and Systems publishes peer-reviewed papers reporting on original research in the development, testing, and application of telescopes, instrumentation, techniques, and systems for ground- and space-based astronomy.
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