Chang'E 3 Special Issue

Data processing and initial results from the CE-3 Extreme Ultraviolet Camera

Jian-Qing Feng, Jian-Jun Liu, Fei He, Wei Yan, Xin Ren, Xu Tan, Ling-Ping He, Bo Chen, Wei Zuo, Wei-Bin Wen, Yan Su, Yong-Liao Zou, Chun-Lai Li


Abstract The Extreme Ultraviolet Camera (EUVC) onboard the Chang’e-3 (CE-3) lander is used to observe the structure and dynamics of Earth’s plasmasphere from the Moon. By detecting the resonance line emission of helium ions (He+) at 30.4 nm, the EUVC images the entire plasmasphere with a time resolution of 10 min and a spatial resolution of about 0.1 Earth radius (RE) in a single frame. We first present details about the data processing from EUVC and the data acquisition in the commissioning phase, and then report some initial results, which reflect the basic features of the plasmasphere well. The photon count and emission intensity of EUVC are consistent with previous observations and models, which indicate that the EUVC works normally and can provide high quality data for future studies.


Keywords space vehicles: instruments: Extreme Ultraviolet Camera — Earth: plas- masphere — method: data processing

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