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SAFARI optical system architecture and design concept

机译：SAFARI光学系统架构和设计概念

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摘要

SpicA FAR infrared Instrument, SAFARI, is one of the instruments planned for the SPICA mission. The SPICA mission is the next great leap forward in space-based far-infrared astronomy and will study the evolution of galaxies, stars and planetary systems. SPICA will utilize a deeply cooled 2.5m-class telescope, provided by European industry, to realize zodiacal background limited performance, and high spatial resolution. The instrument SAFARI is a cryogenic grating-based point source spectrometer working in the wavelength domain 34 to 230 μm, providing spectral resolving power from 300 to at least 2000. The instrument shall provide low and high resolution spectroscopy in four spectral bands. Low Resolution mode is the native instrument mode, while the high Resolution mode is achieved by means of a Martin-Pupplet interferometer. The optical system is all-reflective and consists of three main modules; an input optics module, followed by the Band & Mode Distributing Optics and the grating Modules. The instrument utilizes Nyquist sampled filled linear arrays of very sensitive TES detectors. The work presented in this paper describes the optical design architecture and design concept compatible with the current instrument performance and volume design drivers.
机译：SpicA FAR红外仪器SAFARI是计划用于SPICA任务的仪器之一。 SPICA任务是天基远红外天文学的下一个重大飞跃，它将研究星系，恒星和行星系统的演化。 SPICA将利用欧洲工业提供的深度冷却的2.5m级望远镜来实现黄道背景限制的性能和高空间分辨率。 SAFARI仪器是一种基于低温光栅的点源光谱仪，在34至230μm的波长范围内工作，提供300至至少2000的光谱分辨能力。该仪器应在四个光谱带中提供低分辨率和高分辨率光谱。低分辨率模式是本机仪器模式，而高分辨率模式是通过Martin-Pupplet干涉仪实现的。光学系统是全反射的，由三个主要模块组成;输入光学模块，然后是波段和模式分布光学模块和光栅模块。该仪器利用非常敏感的TES检测器的Nyquist采样填充线性阵列。本文介绍的工作描述了与当前仪器性能和体积设计驱动器兼容的光学设计架构和设计概念。

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