The Absolute Reflectance and New Calibration Site of the Moon

	The Absolute Reflectance and New Calibration Site of the Moon
	Wu, Yunzhao; Wang, Zhenchao; Cai, Wei; Lu, Yu
刊名	ASTRONOMICAL JOURNAL
	2018
卷号	155 期号:5 页码:213
英文摘要	How bright the Moon is forms a simple but fundamental and important question. Although numerous efforts have been made to answer this question such as use of sophisticated electro-optical measurements and suggestions for calibration sites, the answer is still debated. An in situ measurement with a calibration panel on the surface of the Moon is crucial for obtaining the accurate absolute reflectance and resolving the debate. China's Chang'E-3 (CE-3) "Yutu" rover accomplished this type of measurement using the Visible-Near Infrared Spectrometer (VNIS). The measurements of the VNIS, which were at large emission and phase angles, complement existing measurements for the range of photometric geometry. The in situ reflectance shows that the CE-3 landing site is very dark with an average reflectance of 3.86% in the visible bands. The results are compared with recent mission instruments: the Lunar Reconnaissance Orbiter Camera (LROC) Wide Angle Camera (WAC), the Spectral Profiler (SP) on board the SELENE, the Moon Mineralogy Mapper (M-3) on board the Chandrayaan-1, and the Chang'E-1 Interference Imaging Spectrometer (IIM). The differences in the measurements of these instruments are very large and indicate inherent differences in their absolute calibration. The M-3 and IIM measurements are smaller than LROC WAC and SP, and the VNIS measurement falls between these two pairs. When using the Moon as a radiance source for the on-orbit calibration of spacecraft instruments, one should be cautious about the data. We propose that the CE-3 landing site, a young and homogeneous surface, should serve as the new calibration site.
语种	英语
WOS记录号	WOS:000431047300001
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/18076]
专题	中国科学院紫金山天文台
推荐引用方式 GB/T 7714	Wu, Yunzhao,Wang, Zhenchao,Cai, Wei,et al. The Absolute Reflectance and New Calibration Site of the Moon[J]. ASTRONOMICAL JOURNAL,2018,155(5):213.
APA	Wu, Yunzhao,Wang, Zhenchao,Cai, Wei,&Lu, Yu.(2018).The Absolute Reflectance and New Calibration Site of the Moon.ASTRONOMICAL JOURNAL,155(5),213.
MLA	Wu, Yunzhao,et al."The Absolute Reflectance and New Calibration Site of the Moon".ASTRONOMICAL JOURNAL 155.5(2018):213.