The FS series of apochromatic refracting telescopes from Takahashi provides a balance of high performance, compact size, and low cost. At its heart is a two-element fluorite lens set that provides outstanding performance for both visual and imaging applications. The FS series makes use of several reducers, extenders and flatteners to further enhance its capabilities and performance.
DESCRIPTION
The Takahashi FS-60Q apochromatic refractor is a longer focal length version of the FS-60CB. It is in fact the same telescope to which is added the Extender 1.7X kit which allows to change the FS-60CB to F/D 10, by making it evolve towards a formula with 4 lenses offering a flat field on the whole image circle.
The longer F/D ratio allows optimal chromatic correction for unforgettable planetary observations or for eclipse photography. It is quite possible to remove the 1.7X extender and switch from an FS-60Q to an FS-60CB, at F/5.9 more suitable for deep sky imaging. The same refractor allows you to quickly change from a 600 mm focal length to a 355 mm focal length according to your needs.
CHARACTERISTICS
| CHARACTERISTIC | TAKAHASHI FS-60Q REFRACTOR |
| Objective | Fluorite doublet apochromat |
| Lens cell | Air-spaced doublet. Fluorite in the front |
| Coatings | Hard multicoatings |
| Diameter | 60 mm |
| AT PRIME FOCUS, WITH EX-CQ1.7X FOCAL EXTENDER | |
| Focal length | 600 mm |
| Focal ratio | F/10 |
| Metal back distance | 158.4 mm |
| AT PRIME FOCUS | |
| Focal length | 355 mm |
| Focal ratio | F/5.9 |
| Metal Back Distance | 162 mm |
Takahashi FS-60Q Refractor
| CHARACTERISTIC | TAKAHASHI FS-60Q REFRACTOR |
| Length of the optical tube | 550 mm |
| Diameter of the optical tube | 80 mm |
| Diameter of the dew shield | 80 mm |
| Weight | 1.6 kg |
| Focuser | Rack-and-pinion |
Spot-diagram of Takahashi FS-60Q refractor at prime focus
FS-60CB Extender-Q System Chart
FS-60CB Extender C2X System Chart
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