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FOA-60 refractor OTA

Description

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.

Characteristics

Takahashi FOA-60 refractor

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

Takahashi FOA-60 refractor

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

Documentation

System-charts

System-chart of Takahashi FOA-60 refractor Télécharger
System-chart of Takahashi FOA-60 refractor with extenders Télécharger

Instruction manuals

Instruction manual of Takahashi FOA-60 telescope Télécharger