![](http://ems-bino.com/wordpress/wp-content/uploads/2019/04/1904180843-300x263.jpg)
![](http://ems-bino.com/wordpress/wp-content/uploads/2019/04/1904180853-300x284.jpg)
例の黒点がもう西の端に
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.