ShadowCam Instrument and Investigation Overview

IF 0.6 Q4 ASTRONOMY & ASTROPHYSICS

Journal of Astronomy and Space Sciences Pub Date : 2023-12-01 DOI:10.5140/jass.2023.40.4.149

M. S. Robinson, S. Brylow, M. Caplinger, Lynn M. Carter, Mattew John Clark, B. Denevi, Nick Estes, D. Humm, P. Mahanti, Douglas Arden Peckham, M. Ravine, Jacob Andrieu Schaffner, E. Speyerer, R. Wagner

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Abstract

ShadowCam is a National Aeronautics and Space Administration Advanced Exploration Systems funded instrument hosted onboard the Korea Aerospace Research Institute (KARI) Korea Pathfinder Lunar Orbiter (KPLO) satellite. By collecting high-resolution images of permanently shadowed regions (PSRs), ShadowCam will provide critical information about the distribution and accessibility of water ice and other volatiles at spatial scales (1.7 m/pixel) required to mitigate risks and maximize the results of future exploration activities. The PSRs never see direct sunlight and are illuminated only by light reflected from nearby topographic highs. Since secondary illumination is very dim, ShadowCam was designed to be over 200 times more sensitive than previous imagers like the Lunar Reconnaissance Orbiter Camera Narrow Angle Camera (LROC NAC). ShadowCam images thus allow for unprecedented views into the shadows, but saturate while imaging sunlit terrain.

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ShadowCam 仪器和调查概述

ShadowCam 是美国国家航空航天局高级探索系统资助的仪器，搭载在韩国航空航天研究所（KARI）的韩国探路者月球轨道器（KPLO）卫星上。通过收集永久阴影区（PSRs）的高分辨率图像，ShadowCam 将以空间尺度（1.7 米/像素）提供有关水冰和其他挥发物分布和可获取性的重要信息，以降低风险并最大限度地提高未来探索活动的成果。PSR 从未受到阳光直射，只能通过附近地形高点反射的光线进行照明。由于次级照明非常暗淡，ShadowCam 的灵敏度比以前的成像仪（如月球勘测轨道器相机窄角相机 (LROC NAC)）高出 200 多倍。因此，ShadowCam 图像可以提供前所未有的阴影视野，但在对阳光照耀下的地形成像时会出现饱和现象。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Astronomy and Space Sciences ASTRONOMY & ASTROPHYSICS-

CiteScore

1.30

自引率

20.00%

发文量

审稿时长

12 weeks

期刊介绍： JASS aims for the promotion of global awareness and understanding of space science and related applications. Unlike other journals that focus either on space science or on space technologies, it intends to bridge the two communities of space science and technologies, by providing opportunities to exchange ideas and viewpoints in a single journal. Topics suitable for publication in JASS include researches in the following fields: space astronomy, solar physics, magnetospheric and ionospheric physics, cosmic ray, space weather, and planetary sciences; space instrumentation, satellite dynamics, geodesy, spacecraft control, and spacecraft navigation. However, the topics covered by JASS are not restricted to those mentioned above as the journal also encourages submission of research results in all other branches related to space science and technologies. Even though JASS was established on the heritage and achievements of the Korean space science community, it is now open to the worldwide community, while maintaining a high standard as a leading international journal. Hence, it solicits papers from the international community with a vision of global collaboration in the fields of space science and technologies.