A dedicated extender for the Epsilon-130D, designed to extend its focal length to 650 mm at f/5.0. It has a corrected image circle of 44 mm and a sensor distance of 56.2 mm.
CHF 886.17incl. Swiss VAT
Part Number TKA69595
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi TKA69595 extender increases the focal length of the Epsilon-130D from 430 to 650 mm. This allows small objects to fill more of the frame, with a resulting aperture ratio of f/5.0.
Its specialized design, consisting of seven elements in five groups, corrects coma across a 44-mm image circle, suitable for the 24 × 36-mm format. The manufacturer also recommends visual use with the mounts indicated on the instrument’s diagram.
The set includes the extender’s two optical units: the corrector unit and the master unit, shown assembled in the photograph. It is mounted in place of the tube’s original corrector. This version is designed specifically for the Epsilon-130D.
These assembly instructions apply to the Epsilon-130D, not the older Epsilon-130.
The input has an M60x0.75 male thread, and the output has an M54x0.75 female thread. The working distance to the sensor is 56.2 mm. For a camera, be sure to use the Takahashi wide-field adapter ring appropriate for its mount, sold separately. The assembly diagram specifies the connectors to use and the reference point from which this distance is measured.
For filtration, Takahashi Europe recommends an internal filter or a camera filter wheel: an M48 filter screwed into the extender may cause reflections. With this setup, the filter is no longer mounted in the standard wide-field ring. Be sure to account for the thickness of the camera and filter wheel adapters in your mounting design.
| Features | Value |
|---|---|
| Reference | TKA69595 |
| Resulting focus | 650 mm |
| Resulting F/D ratio | F/D 5.0 |
| Corrected Image Circle Diameter | 44 mm |
| Backfocus | 56.2 mm |
| Compatible instruments | Takahashi Epsilon-130D |
| Design | 7 lenses in 5 groups |
| Mechanical Input Interface | M60x0.75 male thread |
| Mechanical Output Interface | M54 x 0.75 female |
| Mechanical draw | 40.5 mm |
| Mechanical diameter | 72.1 mm |
| Mechanical Length | 98.5 mm |
| Weight | 450 g |
| Composition | Correction Unit and Master Unit of the Extender |
Here are a few accessories we've selected for this model, depending on your needs.
Epsilon-130D, tube sold separately. This extender is specific to this model and replaces the original corrector. Check the connections, assembly, and focus according to the Takahashi diagram.
