Nancy Grace Roman Space Telescope
SpaceX · 重型猎鹰 · 39A 号发射工位 (LC-39A)
任务简介
南希·格雷斯·罗曼太空望远镜是NASA的一台红外太空望远镜，配备2.4米（7.9英尺）宽视场主镜和两台科学仪器。广域仪器（WFI）是一台300.8百万像素的多波段可见光和近红外相机，在0.28平方度的视场内提供与哈勃太空望远镜相当的图像清晰度，视场比哈勃上的成像相机大100倍。日冕仪（CGI）是一台高对比度、小视场相机和光谱仪，覆盖可见光和近红外波段，采用新型星光抑制技术。罗曼望远镜的目标包括利用引力微透镜搜寻系外行星，探测宇宙膨胀历史和宇宙结构的增长，以测量暗能量的影响、广义相对论的一致性以及时空曲率。
原文
The Nancy Grace Roman Space Telescope is a NASA infrared space telescope with a 2.4 m (7.9 ft) wide field of view primary mirror and two scientific instruments. The Wide-Field Instrument (WFI) is a 300.8-megapixel multi-band visible and near-infrared camera, providing a sharpness of images comparable to that achieved by the Hubble Space Telescope over a 0.28 square degree field of view, 100 times larger than imaging cameras on the Hubble. The Coronagraphic Instrument (CGI) is a high-contrast, small field of view camera and spectrometer covering visible and near-infrared wavelengths using novel starlight-suppression technology. Roman objectives include a search for extra-solar planets using gravitational microlensing, and probing the expansion history of the Universe and the growth of cosmic structure, with the goal of measuring the effects of dark energy, the consistency of general relativity, and the curvature of spacetime.
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