The Far- and Lyman-ultraviolet imaging demonstrator (FLUID) is a rocket-borne arcsecond-level ultraviolet (UV) imaging instrument covering four bands between 92 and 193 nm. FLUID will observe nearby galaxies to find and characterize the most massive stars that are the primary drivers of the chemical and dynamical evolution of galaxies and the co-evolution of the surrounding galactic environment. The FLUID short wave channel is designed to suppress efficiency at Lyman-α (121.6 nm) while enhancing the reflectivity of shorter wavelengths. Utilizing this technology, FLUID will take the first ever images of local galaxies isolated in the Lyman UV (90–120 nm). As a pathfinder instrument, FLUID will employ and increase the technology readiness level of band-selecting UV coatings and solar-blind UV detector technologies, including microchannel plate and solid-state detectors; technologies that are prioritized in the 2022 NASA Astrophysical Biennial Technology Report. These technologies enable high throughput and high sensitivity observations in the four co-aligned UV imaging bands that make up the FLUID instrument. We present the design of FLUID, status on the technology development, and results from initial assembly and calibration of the FLUID instrument.

中文翻译：

---

远紫外和莱曼紫外成像演示器：用于高效紫外波段选择成像的火箭载探路仪器

远紫外和莱曼紫外成像演示器 (FLUID) 是一种火箭载弧秒级紫外 (UV) 成像仪器，覆盖 92 至 193 nm 之间的四个波段。 FLUID将观测附近的星系，以寻找和表征最大质量的恒星，这些恒星是星系化学和动力学演化以及周围星系环境共同演化的主要驱动力。 FLUID 短波通道旨在抑制 Lyman-α (121.6 nm) 的效率，同时增强较短波长的反射率。利用这项技术，FLUID 将拍摄第一张在莱曼紫外线（90-120 nm）中分离的本地星系图像。作为探路者仪器，FLUID 将采用并提高波段选择 UV 涂层和日盲 UV 检测器技术（包括微通道板和固态检测器）的技术准备水平； 2022 年 NASA 天体物理双年度技术报告中优先考虑的技术。这些技术可在构成 FLUID 仪器的四个共同对准的 UV 成像波段中实现高通量和高灵敏度观察。我们介绍了 FLUID 的设计、技术开发现状以及 FLUID 仪器的初始组装和校准结果。