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-60CB refractor is the ultimate mobile instrument. It combines first-class optical and mechanical qualities with outstanding compactness.

It can easily be used for astronomical or terrestrial observation. Photographers will transform it into a wide field astrograph or a guiding instrument. A focal reducer (F/4.2) and a field corrector (FL-FS-60C or multi-flattener FC/FS MFL1.04X) are available as options for this purpose. A 1.7x extender (F/10) allows the refractor to be upgraded to the so-called FS-60Q version. A wide range of accessories adapts the FS-60 to your specific needs.

The FS-60CB's main advantage is its air-spaced apochromatic fluorite doublet, manufactured with the same care as all the Takahashi larger diameter telescopes. Performances will surprise many a purist. Takahashi's mechanical excellence makes the FS-60CB one of the best refractors of this diameter available on the market. Lightweight and compact, the FS-60CB will delight all observers with its versatility.

CHARACTERISTICS

Characteristics	Takahashi FS-60CB Refractor
Objective	Fluorite doublet apochromat
Lens cell	Air-spaced doublet. Fluorite on the front
Coatings	Hard Multicoatings
Diameter	60 mm
AT PRIME FOCUS
Focal length	355 mm
Focal ratio	F/5.9
Metal Back Distance	162 mm
WITH FL-FS-60C FIELD CORRECTOR
Focal length	370 mm
OFocal ratio	F/6.2
Image circle diameter	45 mm
Metal Back Distance	56.2 mm
WITH FC/FS MFL1.04X FIELD CORRECTOR
Focal length	370 mm
Focal ratio	F/6.2
Image circle diameter	45 mm
Metal Back Distance	56.2 mm
WITH RD-C0.72X FOCAL REDUCER
Focal length	255 mm
Focal ratio	F/4.2
Image circle diameter	40 mm
Metal Back Distance	56.2 mm
WITH 1.7XR FOCAL EXTENDER (FS-60Q)
Focal length	600 mm
Focal ratio	F/10
Metal Back Distance	158.4 mm

Takahashi FS-60CB Refractor

CHARACTERISTICS	TAKAHASHI FS-60CB REFRACTOR
Length of the optical tube	440 mm
Diameter of the optical tube	80 mm
Diameter of the dew shield	80 mm
Weight	1.4 kg
Focuser	Rack-and-pinion

The spot-diagrams of the FS-60CB clearly show the excellent chromatic correction at the primary focus, ensured by the fluorite doublet lens, and the good performance of the diffraction task, even at more than 14 mm from the optical axis. We should also note the major role of the optional corrector in restoring the flatness of the field for wide field photographic use. It allows unrestricted use of the latest CCD cameras and digital cameras.