面向 Aspera 小型卫星任务的 Far-紫外光光谱仪的光学对准技术
天体物理仪器与方法
2024-07-23 v1 仪器与探测器
光学
摘要
Aspera 是一颗旨在研究近邻星系暗面 OVI 发射的 NASA 天体物理家族小型卫星任务，其有效载荷由两个完全相同的罗瓦尔dt圆类型长槽光谱仪组成，这两个光谱仪共享单个微通道板探测器。每个光谱仪通道由一个离轴抛物面 primary mirror 和一个针对 1013-1057 埃尔弗韦尔带宽优化的扭转衍射 grating 组成。尽管配置简单，Aspera 的光学对准/集成过程仍具有挑战性，这源于紧凑结构导致的严苛光学对准容差，以及 Far-紫外光光学和探测器的污染敏感性。本文讨论了如何采用 novel 多阶段方法以满足这些要求，运用最先进的光学测量工具。对于粗略定位光学元件，我们使用蓝色激光 3D 扫描仪；而精细对准则使用 Zygo 干涉仪和 custom 计算机生成全息图。探测器焦点需要使用真空紫外光 collimator 进行迭代式真空中对准。该对准工作在亚利桑那大学受控洁净实验室中完成。
关键词
引用
@article{arxiv.2407.15391,
title = {Optical alignment of contamination-sensitive Far-Ultraviolet spectrographs for Aspera SmallSat mission},
author = {Aafaque R. Khan and Erika Hamden and Haeun Chung and Heejoo Choi and Daewook Kim and Nicole Melso and Keri Hoadley and Carlos J. Vargas and Daniel Truong and Elijah Garcia and Bill Verts and Fernando Coronado and Jamison Noenickx and Jason Corliss and Hannah Tanquary and Tom Mcmahon and Dave Hamara and Simran Agarwal and Ramona Augustin and Peter Behroozi and Harrison Bradley and Trenton Brendel and Joe Burchett and Jasmine Martinez Castillo and Jacob Chambers and Lauren Corlies and Greyson Davis and Ralf-Jürgen Dettmar and Ewan Douglas and Giulia Ghidoli and Alfred Goodwin and Walter Harris and Carl Hergenrother and J. Christopher Howk and Miriam Keppler and Nazende Ipek Kerkeser and John N. Kidd and Jessica S. Li and Gabe Noriega and Sooseong Park and Ryan Pecha and Cork Sauve and David Schiminovich and Sanford Selznick and Oswald Siegmund and Rebecca Su and Sumedha Uppnor and Jacob Vider and Ellie Wolcott and Naomi Yescas and Dennis Zaritsky},
journal= {arXiv preprint arXiv:2407.15391},
year = {2024}
}
备注
Manuscript submitted for Proceedings of Astronomical Telescopes + Instrumentation 2024, Paper no. 13093-9