Takahashi FCT serie
The FCT are true apochromatics triplets. These refractors include one lens in fluorite for a near perfect color correction. The available sizes were: 65, 76, 100, 125, 150, 200 and 250mm.
FCT 65 (1986)
The small one. The focal lenght is 320mm and the f ratio is 4.9
FCT 76 (1985)
The focal lenght is 487mm and the f ratio is 6.4
FCT 100 (1986)
The focal lenght is 640mm and the f ratio is 6.4
FCT 125 (1987)
The focal lenght is 705mm and the f ratio is 5.6
FCT 150 (1985)
The focal lenght is 1048mm and the f ratio is 7
FCT 200 (1991)
The focal lenght is 2000mm and the f ratio is 10
FCT 250