Pollux is a high-resolution spectropolarimeter proposed by an European consortium for HWO. The current design of Pollux features four spectropolarimetric channels, three of which are in the UV range. For the near-UV (NUV) [236-472 nm] and mid-UV (MUV) [118-236 nm] channels, the polarimeters consist of waveplates and prisms made of MgF2, a birefringent material. However, no such birefringent material can be used for the far-UV (FUV) channel [100-123 nm]. Therefore, the polarimeter for this FUV channel is composed solely of mirrors in an innovative assembly. In this talk, we aim to detail the architecture of the test bench that will allow us to validate the performance of these different polarimeters, as part of the HWO GOMaP. Given that we are working in the vacuum ultraviolet (VUV) range, the test bench operates in a vacuum chamber in a clean room. We will discuss the adaptable architecture of the bench based on wavelength and the measurement methodology that we will implement to test if the polarimeters achieve the precision of $10^{-3}$ required for the Pollux instrument. With this test bench, we will successfully increase the Technology Readiness Level (TRL) of UV spectropolarimeters and, for the first time, develop a means to test FUV spectropolarimetry.
LIRA, Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CY Cergy Paris Université, CNRS(拉伊尔实验室,巴黎天文台,巴黎文理研究大学,索邦大学,巴黎西岱大学,塞吉-蓬图瓦兹大学,法国国家科学研究中心);GOLD-IO-CSIC, Instituto de Óptica - Consejo Superior de Investigaciones Científicas(光学研究所-西班牙高等科学理事会)
Pollux: decisions affecting the optical architecture of a high-resolution spectrograph and polarimeter for the Habitable Worlds Observatory
Department of Physics, University of Oxford(牛津大学物理系);Space Research Institute, Austrian Academy of Sciences(奥地利科学院空间研究所);LIRA, Observatoire de Paris, Universite PSL, CNRS, Sorbonne Universite, Universite Paris Cite, CY Cergy Universite(巴黎天文台 LIRA 实验室(隶属于 PSL 大学、CNRS、索邦大学、巴黎西岱大学、CY 塞尔吉大学));Aix Marseille Univ, CNRS, CNES, LAM, Marseille(艾克斯-马赛大学)
The ocean worlds science case for the Pollux spectropolarimeter
Aix-Marseille Université(艾克斯-马赛大学);Institut Origines(起源研究所);University of Liège(列日大学);Univ. Grenoble Alpes(格勒诺布尔阿尔卑斯大学);Southwest Research Institute(西南研究院);Johns Hopkins University Applied Physics Laboratory(约翰斯·霍普金斯大学应用物理实验室);UVSQ Paris Saclay(巴黎萨克雷凡尔赛大学);Sorbonne Universite(索邦大学);Space Research Institute, Austrian Academy of Sciences(奥地利科学院空间研究所);Royal Institute of Technology KTH(瑞典皇家理工学院)
Nine years of UVIT: assessing sensitivity variation
Indian Institute of Astrophysics(印度天体物理研究所);Inter-University Center for Astronomy and Astrophysics(大学间天文与天体物理中心);Tata Institute of Fundamental Research(塔塔基础研究所)
The Cosmic Origins Spectrograph: On-Orbit Instrument Performance
宇宙起源光谱仪(COS)于2009年5月安装在哈勃太空望远镜上,作为服务任务4的一部分,以提供远紫外和近紫外波长(FUV,NUV)的高灵敏度,中分辨率和低分辨率光谱。COS是迄今为止最灵敏的FUV/NUV摄谱仪,波长范围从900 nm到3200 nm,峰值有效面积接近3000 cm ^2。本文介绍了仪器设计,服务任务轨道验证(SMOV)的结果,和正在进行的性能监测计划。
我目前的表格的GALEX航天器在两个紫外波段(FUV:1539 A和NUV:2316 A)的GALEX航天器(GR 6/GR 7)的(几乎)最后的数据发布的漫射观测。该数据发布包括所有FUV观测和大部分NUV观测。我讨论数据的总体趋势,但主要目的是向公众提供数据。本文中描述的这些数据文件由空间望远镜科学研究所的Mikulski Archive for Space Telescopes(MAST)托管,可以从那里下载。为了便于使用,我还创建了整个观测天空中两个波段的漫射辐射图,分辨率为6“。