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This is the commemorative Sun, I watched with my dear friend in Taiwan(Mr. T.W.) who were taking a visit to me here.
台湾の友人と見た、記念すべき太陽です。
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.