Takahashi FS-60CB Telescope (tube only)
FS-60CB tube sold separately; check the photo adapter ring compatible with your camera and the focal length according to the Takahashi diagram.
CHF 838.00
Takahashi TKA20580B reducer for the FS-60 series. 40 mm corrected image circle, 56.2 mm mechanical back focus, and M52x0.75 male thread.
CHF 468.00incl. Swiss VAT
Part Number TKA20580B
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi RD C0.72X, part number TKA20580B, is an optical accessory designed for the FS-60CB and FS-60Q telescopes, as well as the older FS-60B and FS-60CSV models. It allows you to set up a photographic mount using this family of telescopes. For each version, the Takahashi assembly diagram remains the standard for selecting adapters and configuring the optical train.
The mechanical input uses an M56x0.75 female thread, and the output uses an M52x0.75 male thread. A camera body is connected using a wide-angle T-ring specific to the FS-60 and the camera brand. This ring is a mounting component that must be provided separately; it is not an accessory listed as included with the adapter.
The specified mechanical backfocus is 56.2 mm. This distance must be taken into account when assembling a CMOS or CCD camera, with or without a filter wheel. The manufacturer specifies a corrected image circle of 40 mm; this value describes the corrected field of view of the accessory and does not guarantee uniform coverage for all sensor and mount configurations.
The published length is 48 mm, with a weight of 180 g. Before installation, check your telescope’s mounting interfaces and the available distance to the sensor. The specifications below apply only to this part number: they do not describe a kit that includes a scope, a camera, or a filter wheel.
| Features | Value |
|---|---|
| Reference | TKA20580B |
| Corrected image circle | 40 mm |
| Mechanical Input Interface | M56x0.75 female thread |
| Mechanical Output Interface | M52x0.75 male thread |
| Mechanical backfocus | 56.2 mm |
| Length | 48 mm |
| Weight | 180 g |
TKA20580B adapter. T-ring, lens, camera, and video camera not listed as included.
Here are a few accessories we've selected for this model, depending on your needs.
FS-60CB tube sold separately; check the photo adapter ring compatible with your camera and the focal length according to the Takahashi diagram.
FS-60CB with finder and mount, sold separately: an alternative to the tube alone. You'll need a camera adapter depending on your setup.
FS-60Q tube sold separately; remove its built-in 1.7× CQ extender to use this reducer. Check the focus ring and the focus distance.
FS-60Q with finder scope and mount, sold separately: an alternative to the tube alone. Remove the built-in 1.7× CQ for this setup; check the connections.
