NDLI: Ladee uvs observations of solar occultation by exospheric dust above the lunar limb

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Ladee uvs observations of solar occultation by exospheric dust above the lunar limb

Content Provider	NASA Technical Reports Server (NTRS)
Author	Elphic, R. C. Colaprete, A. Glenar, D. A. Wooden, D. H. Cook, A. M. Vargo, K. E. Stubbs, T. J. Shirley, M. H.
Copyright Year	2014
Description	The Lunar Atmosphere and Dust Environment Explorer (LADEE) is a lunar orbiter launched in September 2012 that investigates the composition and temporal variation of the tenuous lunar exosphere and dust environment. The primary goals of the mission are to characterize the pristine gas and dust exosphere prior to future lunar exploration activities, which may alter the lunar environment. To address this goal, the LADEE instrument suite includes an Ultraviolet/ Visible Spectrometer (UVS), which searches for dust, Na, K, and trace gases such as OH, H2O, Si, Al, Mg, Ca, Ti, Fe, as well as other previously undetected species. UVS has two sets of optics: a limb-viewing telescope, and a solar viewing telescope. The solar viewer is equipped with a diffuser (see Figure 1a) that allows UVS to stare directly at the solar disk as the Sun starts to set (or rise from) behind the lunar limb. Solar viewer measurements generally have very high signal to noise (SNR greater than 500) for 20-30 ms integration times. The 1-degree solar viewer field of view subtends a diameter of approximately 8 km at a distance of 400-450 km.
File Size	477954
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20150011015
Archival Resource Key	ark:/13960/t6p035s43
Language	English
Publisher Date	2014-03-17
Access Restriction	Open
Subject Keyword	Ladee Solar Occultation Exospheric Dust Lunar Dust Exosphere Signal To Noise Ratios Ultraviolet Spectrometers Spectroscopic Analysis Lunar Limb Occultation Lunar Orbiter Line of Sight Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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