16:30 〜 16:45
[PPS06-17] SLIM着陸機搭載マルチバンドカメラMBCの開発完了報告
キーワード：月、近赤外分光法、かんらん石
Smart Lander for Investigating Moon (SLIM) project promoted by JAXA is in the final stage. It will be launched in fiscal year 2022 as JAXA's first lunar-soft-landing mission. The main purpose of this project is to demonstrate various techniques for pinpoint landing within a hundred meters in radius on the moon. Demonstration of the SLIM landing technology will cause a paradigm shift from "exploring where it is easy to land" to "exploring where we want to land". After landing, the SLIM project plans to operate Multi-Band Camera (MBC) to observe around the landing site. We have just finished testing the flight model of MBC and completed the development.
As a landing site for SLIM mission, one of the small fresh craters just outside of the Theophilus crater is selected. This crater (diameter ~200 m) locates 13.3oS, 25.2oE outside the southwest rim of Theophilus and named "Shioli". There is olivine-rich lithology, which is probably mantle (or the lower part of the crustal) origin excavated by the Nectaris basin forming impact as suggested by the global distribution of the olivine-rich sites (Yamamoto et al. , 2010) , well before the formation of the Theophilus.
In order to identify this unknown lithology and estimate its origin, MBC has a spatial resolution (1.3 mm/pixel at 10 m) that distinguishes plutonic rock texture and a band combination (10 bands; 750, 920, 950, 970, 1000, 1050, 1100, 1250, 1550, 1650 (nm)) that identifies mineral species and estimates Mg#(=Mg/(Mg+Fe) atomic ratio) of olivine.
MBC passed various functional performance tests and environmental tests and was delivered to JAXA. Some specifications were relaxed during developing phase. The final performance of MBC and the optimized operation procedure will be explained.
As a landing site for SLIM mission, one of the small fresh craters just outside of the Theophilus crater is selected. This crater (diameter ~200 m) locates 13.3oS, 25.2oE outside the southwest rim of Theophilus and named "Shioli". There is olivine-rich lithology, which is probably mantle (or the lower part of the crustal) origin excavated by the Nectaris basin forming impact as suggested by the global distribution of the olivine-rich sites (Yamamoto et al. , 2010) , well before the formation of the Theophilus.
In order to identify this unknown lithology and estimate its origin, MBC has a spatial resolution (1.3 mm/pixel at 10 m) that distinguishes plutonic rock texture and a band combination (10 bands; 750, 920, 950, 970, 1000, 1050, 1100, 1250, 1550, 1650 (nm)) that identifies mineral species and estimates Mg#(=Mg/(Mg+Fe) atomic ratio) of olivine.
MBC passed various functional performance tests and environmental tests and was delivered to JAXA. Some specifications were relaxed during developing phase. The final performance of MBC and the optimized operation procedure will be explained.