Preliminary design of a Cassegrain focal station for New Robotic Telescope

Preliminary design of a Cassegrain focal station for New Robotic Telescope
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新型机器人望远镜卡塞格伦焦点站的初步设计

DOI:
10.1117/12.2629302
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发表时间:
2022
期刊:
--
影响因子:
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通讯作者:
Ranjbar A
Ranjbar A
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作者:
Ranjbar A

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新的机器人望远镜(NRT)的概念设计已经开发,包括在卡塞格伦焦点站的自主多仪器适配器。焦点站组件将由补偿地球自转的场旋转器、电缆缠绕、仪器适配器、支撑结构和将望远镜光束引入仪器的折叠镜机构组成。该设计支持在采集和引导盒(A&G盒)周围使用多个仪器,单个仪器端口位于盒底部的直通端口处。A&G盒还包括一个自动导向器,它将安装在盒的侧面,并通过一个小的拾取镜馈送一部分光束。它将使用科学领域以外的领域,并已被设计为包括现成的镜头,摄像系统和透镜管,以尽量减少成本。视场足够大,可以用4米级望远镜进行0.2”精度的“盲自动引导”。然后将整个组件安装到M1单元,形成望远镜安装叉之间保持的望远镜管的底部。本文将对焦点站组件的设计进行总结。
The New Robotic Telescope (NRT) conceptual design has been developed to include an autonomous multi-instrument adaptor at the Cassegrain focal station. The focal station assembly is to consist of a field rotator to compensate the earth rotation, cable wrap, instrument adaptor, support structure, and a fold mirror mechanism to bring the telescope optical beam to the instruments. The design supports the use of multiple instruments around the Acquisition and Guidance box (A&G box) a single instrument port is located at the bottom of the box at the straight through port. The A&G box also includes an autoguider which will be mounted at the side of the box and fed a portion of the optical beam via a small pick off mirror. It will use a field outside that of usable the science field, and has been designed to comprise of off-the-shelf lenses, camera system and lens tubes to minimise cost. The field of view is large enough to conduct ‘blind autoguiding’ at an accuracy of 0.2” with the 4m class telescope. The entire assembly will then be mounted to the M1 cell, forming the bottom part of the telescope tube held between the telescope mount forks. The focal station assembly design will be summarised in this paper.
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