MATSUMOTO-EMS | 天体望遠鏡革命 Innovation of Astronomical Telescope 正立ミラーシステム(EMS)を開発した松本龍郎のサイト。 たった2回の反射で天体望遠鏡の像を正立像にします。 Tatsuro Matsumoto; Inventor of the EMS, Erecting Mirror System. EMS offers non reversed upright image with no additional undesirable abberations. This website includes some English comments on the latest developments. Please don’t skip this page even if you don’t understand Japanese