ULTRASAT 紫外相机设计
天体物理仪器与方法
2021-09-06 v1 高能天体物理现象
摘要
紫外瞬变天文卫星（ULTRASAT）是一台将在对地静止轨道上运行的科学紫外空间望远镜。该任务计划于2024年发射，由以色列魏茨曼科学研究所（WIS）和以色列航天局（ISA）牵头。德国电子同步加速器研究中心（DESY）负责研制望远镜核心的紫外敏感相机。相机总敏感面积约90 mm × 90 mm，由四片背照式CMOS传感器拼接而成，成像视场约200平方度。每片传感器具有2240万像素。望远镜的施密特设计将探测器置于光路内部，限制了组件的整体尺寸，因此读出电子学系统位于望远镜外部的远程单元中。望远镜短焦距要求传感器沿光轴的定位精度在±50 μm以内，平面度在±10 μm以内。望远镜在轨运行期间温度约为295 K，而传感器需冷却至200 K以降低暗电流；同时，还需具备将传感器加热至343 K的能力以进行去污。本文介绍了紫外敏感ULTRASAT相机的初步设计。
引用
@article{arxiv.2108.01493,
title = {Design of the ULTRASAT UV camera},
author = {Arooj Asif and Merlin Barschke and Benjamin Bastian-Querner and David Berge and Rolf Bühler and Nicola De Simone and Gianluca Giavitto and Juan M. Haces Crespo and Nirmal Kaipachery and Marek Kowalski and Shrinivasrao R. Kulkarni and Daniel Küsters and Sebastian Philipp and Heike Prokoph and Julian Schliwinski and Mikhail Vasilev and Jason J. Watson and Steven Worm and Francesco Zappon and Shay Alfassi and Sagi Ben-Ami and Adi Birman and Kasey Boggs and Greg Bredthauer and Amos Fenigstein and Avishay Gel-Yam and Dmitri Ivanov and Omer Katz and Ofer Lapid and Tuvia Liran and Ehud Netzer and Eran O. Ofek and Shirly Regev and Yossi Shvartzvald and Joseph Tufts and Dmitry Veinger and Eli Waxman},
journal= {arXiv preprint arXiv:2108.01493},
year = {2021}
}
备注
"UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXII", Proc. SPIE 11821, Optics and Photonics, 11821-21 (August, 2021). Contact authors Rolf Buehler ([email protected]) and Merlin Barschke ([email protected])