| タイトル | LADEE UVS Observations of Solar Occulation by Exospheric Dust above the Lunar Limb |
| 本文（外部サイト） | http://hdl.handle.net/2060/20140006941 |
| 著者（英） | Cook, Amanda Marie; Wooden, Diane; Shirley, M. H.; Stubbs, T. J.; Elphic, R. C.; Glenar, D. A.; Vargo, K. E.; Colaprete, A. |
| 著者所属（英） | NASA Ames Research Center |
| 発行日 | 2014-03-17 |
| 言語 | eng |
| 内容記述 | 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>500) for 20-30 ms integration times. The 1-degree solar viewer field of view subtends a diameter of ~8 km at a distance of 400-450 km |
| NASA分類 | Astronomy |
| レポートNO | ARC-E-DAA-TN12810 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/80403 |
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