Takahashi RD C0.72X: Reducer for FS-60
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.
CHF 468.00
Takahashi FS-60CB 60-mm apochromatic telescope, focal length 355 mm at f/5.9. TSK06200 configuration with TSK06210 tube, 6×30 finder scope, and 80S mount and collar.
CHF 1'158.00incl. Swiss VAT
Reference TSK06200
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi FS-60CB combines a 60 mm aperture with a native focal length of 355 mm, for an f/5.9 ratio. Its apochromatic objective is an air-spaced doublet, with the fluorite element positioned at the front. This design aims to provide good chromatic correction in a compact tube. Focusing is achieved via a rack-and-pinion mechanism.
This TSK06200 configuration differs from the tube alone in that it includes a finder scope, a finder scope mount, and a clamp. The finder scope facilitates pointing, while the clamp secures the tube to a compatible interface. The manufacturer intends this product for astronomical and terrestrial observation, as well as for photography or guiding when used with the appropriate accessories.
Correction lenses and reducers are not included in this configuration. With the FL-FS-60C correction lens or the optional FC/FS MFL1.04X, Takahashi specifies 370 mm at f/6.2 and an image circle of 45 mm. With the optional RD-C0.72X reducer, the values become 255 mm at f/4.2, with an image circle of 40 mm. Each photographic configuration uses its own adapters and sensor distance, as indicated in the Takahashi diagram.
Does this part number refer to just the tube?
No. The tube alone has the part number TSK06210; the TSK06200 includes all four components listed above.
Can the FS-60CB be upgraded to an FS-60Q?
Yes, the manufacturer offers the optional EX-CQ1.7X extender to achieve a focal length of 600 mm at f/10. This extender is not included in this package.
Takahashi TSK06200 Official Product 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.
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.
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.
Pair of Takahashi 80WB collars, an optional alternative to the single collar included in this package. Dovetail for mount sold separately; check the balance.
Vixen 220B dovetail for mounting the two 80WB clamps, sold separately. This solution is an alternative to mounting with the included clamp; check the clamp and the balance.
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.
80 mm heating strip for an 80 mm defogger. Check its location and clearance; a 12 V power supply or controller with an RCA connector and sufficient power must be provided separately.
80 mm motorized flat panel recommended by Wanderer for the FS-60/FOA-60 series. Measure the outer diameter and check the mounting, centering, and clearance.
Recommended diameter: 150 mm. Check the measurement and the mounting.
