Mercury Dust Monitor for the BepiColombo MMO M. Kobayashi 1 , H. Shibata 2 , K. Nogami 3 , M. Fujii 4 , T. Miyachi 1 , H. Ohashi 5 , S. Sasaki 6 , T. Iwai 7 , M. Hattori 7 , H. Kimura 8 , T. Hirai 9 , S. Takechi 10 , H. Yano 11 , S. Hasegawa 11 , R. Srama 12 and E. Grün 12 1 Chiba Inst. Tech., 2 Kyoto Univ., 3 Dokkyo Medical Univ., 4 FAM Science, 5 Tokyo Univ. Marine Sci. Tech., 6 NAOJ, 7 Univ. Tokyo, 8 CPS, 9 Sokendai, 10 Osaka City Univ., 11 ISAS/JAXA, 12 Stuttgart Univ. 13 MPI-K. International Workshop of Instrumentation for Planetary Missions, NASA GSFC, Oct 10-12 2012