Takahashi TOA-130NS - 130 mm ED triplet telescope (tube only)
TOA-130NS tube sold separately; check the optical connections and alignment according to the Takahashi diagram.
CHF 5'194.30
Takahashi 35FL Field Corrector for the TSA-120 and TOA-130NS. 40 mm corrected image circle, 50.8 mm slip-on interfaces, and 117.5 mm mechanical back focus.
CHF 366.94incl. Swiss VAT
Part Number TKA31582
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi 35FL corrector, part number TKA31582, is designed for TSA and TOA triplet refractors. Takahashi specifically lists the TSA-120 and TOA-130NS for imaging at their native focal lengths. The purpose is to correct the field curvature of these instruments, not to turn the corrector into a universal adapter for any telescope.
The manufacturer specifies a corrected image circle of 40 mm and describes this corrector as suitable for users of APS-C sensors. For a larger sensor, verify the desired coverage rather than assuming full-frame compatibility based solely on the 2-inch thread. Sensor size and viewfinder configuration remain selection criteria distinct from the mechanical interface.
The inlet is a 2-inch male slip-on connection, and the outlet is a 2-inch female slip-on connection. An M48 thread is specified for mounting a filter; no additional thread pitch is implied by this specification alone. This design allows for a slip-on connection; please verify compatibility with the fittings in your camera system.
The specified mechanical backfocus is 117.5 mm. This should not be confused with the 38 mm flange focal distance, nor with the 74 mm overall length listed in the table. The mechanical diameter is 60 mm and the weight is 200 g. Before assembling the camera, rings, or other accessories, check their dimensions against the intended setup. The inclusion of additional adapters is not specified here: the corrector alone does not prove that a camera adapter is included.
| Features | Value |
|---|---|
| Reference | TKA31582 |
| Corrected image circle | 40 mm |
| Mechanical backfocus | 117.5 mm |
| Mechanical Input Interface | 2" (50.8 mm) male coupler |
| Mechanical Output Interface | 2" (50.8 mm) female spout |
| Circulation | 38 mm |
| Mechanical diameter | 60 mm |
| Mechanical Length | 74 mm |
| Weight | 200 g |
View the Takahashi product page for the 35FL Field Corrector (TSA/TOA).
Here are a few accessories we've selected for this model, depending on your needs.
TOA-130NS tube sold separately; check the optical connections and alignment according to the Takahashi diagram.
TOA-130NFB tube sold separately; check the 50.8 mm sleeve, the fittings, and the draft.
TOA-150B tube sold separately; check the fittings and desired coverage based on the sensor and the Takahashi diagram.
TSA-120 tube sold separately; check that it fits the 50.8 mm slide rail and the photographic fittings.
TSA-120FT tube sold separately; mount with the Feather Touch eyepiece holder according to the diagram specific to this version.
The ED 1.5× extender is sold separately; Takahashi also recommends using the 35FL in TSA/TOA photographic mounts with this extender. Check the order and connections.
CA-35 50.8 mm TKA31201 camera adapter, sold separately for certain 35FL corrector setups. Then select the appropriate camera ring and check the focus.
