Preliminary assembly for the COG and the back-focus measurement.
The IPD-range of 60-74mm is secured with the standard EMS-UL with IPD-Helicoid set. (D=156mm)
FC76DC-BINO making in the climax (2) / 仮組立
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.