Takahashi TKA20420W - 80WB Double Clamps
A pair of Takahashi 80WB collars for this telescope. The 220B dovetail for the mount is sold separately.
CHF 146.06
Takahashi FS-60CB 60-mm apochromatic telescope, focal length 355 mm at f/5.9. TSK06210 tube only, with a fluorite doublet, to be equipped according to your needs.
CHF 838.00incl. Swiss VAT
Reference TSK06210
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi FS-60CB TSK06210 is the optical tube-only version of this 60-mm apochromatic refractor. Its fluorite objective and native focal length of 355 mm make it suitable for both observation and photography when used with the appropriate accessories. The finder scope and mounting collar must be purchased separately.
The doublet is air-spaced, with the fluorite element at the front. The manufacturer highlights its chromatic correction and recommends it for both astronomical and terrestrial observation. The tube is 440 mm long and 80 mm in diameter; its stated weight is 1.4 kg. These specifications refer to the optical tube itself, not a complete system equipped for observation or photography.
At f/5.9, the FS-60CB is the short-focal-length model in this series. For field-corrected photography, Takahashi offers the FL-FS-60C and the FC/FS MFL1.04X separately: each is rated for a resulting focal length of 370 mm at f/6.2, with an image circle of 45 mm. The optional RD-C0.72X reducer brings the focal length down to 255 mm at f/4.2, with an image circle of 40 mm.
Each photographic setup uses its own adapters and sensor distance. The Takahashi mounting diagram allows you to prepare the setup with your chosen corrector or reducer.
Are the researcher and the necklace included?
No. This part number refers to the tube alone. The TSK06200 kit is a separate configuration that includes a 6×30 finder, a mount, and an 80S clamp.
Is this already a telescope with a 600 mm focal length?
No: its native focal length is 355 mm. The EX-CQ1.7X extender, sold separately, allows you to achieve the advertised FS-60Q configuration of 600 mm and f/10.
Takahashi TSK06210 Official Spec Sheet : Specifications and identification of this part number.
The Takahashi FS-60CB is a doublet refractor with a 60 mm aperture and a focal length of 355 mm (f/5.9), designed primarily for deep-sky astrophotography. Its focal length is ideal for observing large nebulae such as the North America Nebula, the Rosette Nebula, and the Heart and Soul Nebula, as well as the entire Andromeda Galaxy and the Pleiades with their nebular structures. With a fast f/5.9 aperture, it allows for reasonable exposure times even when using narrowband filters.
With an APS-C camera featuring 3.76 µm pixels (Sony IMX571 sensor), you get approximately 2.18″ per pixel for a field of view of 3.8° × 2.5°. With the 0.72× crop factor, this increases to 3.03″ per pixel and a field of view of 5.3° × 3.5°.
Yes, whenever you're using an APS-C or full-frame sensor: like any uncorrected doublet lens, it has a slight field curvature that stretches the stars in the corners. Dedicated correctors: Takahashi RD C0.72X: Reducer for FS-60 (equivalent focal length of 256 mm, f/4.2); Takahashi Multi Reducer 0.85×-S for FS-60 (focal length equivalent to 302 mm, f/5); Takahashi TKA00582: 1.04x MFL FC/FS Corrector.
162 mm (metal back); 87.5 mm with MFL 1.04×; 56 mm with 60C RD 0.85×; 158.4 mm with EX-CQ 1.7×. This focal length is measured from the thread to the sensor, including rings, filter wheel, and filter drawer: adhering to this measurement down to the millimeter ensures that stars remain round in the corners.
The tube weighs about 1.4 kg; with the camera, filter wheel, and guide scope, expect it to weigh around 2.9 kg: a small equatorial or harmonic travel mount is sufficient. A refractor requires no collimation: once balanced, it’s ready to use as soon as it reaches operating temperature. At 44 cm long, it fits easily into a bag for travel.
Yes, as a bonus: with an angled mirror and an eyepiece, it provides high-contrast, color-accurate images of the Moon, the planets, and double stars, up to about 120×.
Here are a few accessories we've selected for this model, depending on your needs.
A pair of Takahashi 80WB collars for this telescope. The 220B dovetail for the mount is sold separately.
Vixen Takahashi 220B dovetail for 80WB clamps, sold separately. Check your mount's clamping mechanism and balance.
0.72× reducer for the FS-60CB. Be sure to use the appropriate photographic adapters and verify that the focal length is 56.2 mm based on your setup.
FC-76DCU Conversion Kit: Replaces the front section of the FS-60CB and reuses its focus mechanism. Check the optical accessories after conversion.
Optional top plate for Takahashi 80WB mounts, for attaching accessories. Mounts and lower dovetail sold separately; check spacing, clearance, and balance.
Optional 100 upper bridge for the two 80WB clamps, sold separately. Takahashi confirms their compatibility even though the product sheet lists 95WB. An alternative to the 220B bridge, distinct from the lower dovetail.
0.85×-S Photographic Reducer for the FS-60CB, sold separately. An alternative to the 0.72× model; use it on its own. Check the connections and focus according to the Takahashi diagram.
Extender-Q 1.6× for FS-60CB, a separate option from the CQ 1.7× extender: do not stack them. Check the connections according to the Takahashi diagram; the 50.8 mm adapter TKA00596 may be required depending on the setup.
Recommended diameter: 150 mm. Check the measurement and the mounting.
