The Takahashi FOA-60 was designed to provide a compact instrument capable of delivering exceptional visual performance, similar to that achieved by the TOA series, a true benchmark in this field. Equipped with an apochromatic fluorite lens doublet at F/8.8, the FOA-60 will satisfy the most demanding amateurs. It remains very light, with a weight of only 1.5 kg, and very compact thanks to its retractable dew shield.
A 1.7x extender allows the 4-lens optical formula to evolve, at F/15. This version called FOA-60Q is simply the best scope in the Takahashi range, with its theoretical Strehl ratio of 99.8%, higher than those of the TOA-130 and TOA-150.
| Characteristic | Takahashi FOA-60 refractor |
| Objective | Fluorite doublet apochromat |
| Lens cell | Air-spaced doublet. Fluorite in the front |
| Coatings | Hard multicoatings |
| Diameter | 60 mm |
| At prime focus | |
| Focal length | 530 mm |
| Focal ratio | F/8.8 |
| Metal Back Distance | 175.6 mm |
| With FL0.93X field corrector | |
| Focal length | 495 mm |
| Focal ratio | F/8.2 |
| Image circle diameter | 44 mm |
| Metal Back Distance | 56.2 mm |
| With EXQ1.7XR (FOA-60Q) focal extender | |
| Focal length | 900 mm |
| Focal ratio | F/15 |
| Image circle diameter | 44 mm |
| Metal Back Distance | 208.1 mm |
| Characteristic | Takahashi FOA-60 refractor |
| Length of the optical tube | 500 mm |
| Diameter of the optical tube | 68 mm |
| Diameter of the dew-shield | 80 mm |
| Weight | 1.5 kg |
| Focuser | Rack-and-pinion |
Spot-diagram of Takahashi FOA-60 at prime focus
Spot-diagram of Takahashi FOA-60 with FL0.93X field corrector
Spot-diagram of Takahashi FOA-60 with EXQ1.7X (FOA-60Q) focal extender
| System-chart of Takahashi FOA-60 refractor | Télécharger |
| System-chart of Takahashi FOA-60 refractor with extenders | Télécharger |
| Instruction manual of Takahashi FOA-60 telescope | Télécharger |
