TS Optics focuser base for Newtonian telescopes
Planning to upgrade the focuser on your Newtonian telescope? This base makes the job straightforward. It attaches to the telescope tube wall with four M4 screws or similar fixings (not included) and gives you a ready-to-use mounting surface for dovetail focusers. The base is made from black anodised aluminium, so it handles everyday mechanical stress and outdoor use during night observing sessions.
Compatible tube sizes
This base fits telescope tubes from 190 to 240mm in diameter, which covers most standard 8″ Newtonian telescopes. The central opening is 78mm in diameter, allowing the light cone to pass through freely without any vignetting. The overall plate dimensions are 90 x 90 x 7mm, providing a solid contact area for a stable focuser connection.
Dovetail focuser compatibility
The dovetail focuser base is compatible with a wide range of focusers currently available from TS Optics. If you are not sure whether this base fits your tube or your chosen focuser, please get in touch - we are happy to help.
Technical specifications
| Parameter |
Value |
| Compatible tube diameter |
190-240 mm |
| Central opening diameter |
78 mm |
| Plate dimensions |
90 x 90 x 7 mm |
| Mounting screws |
4 x M4 (not included) |
| Material |
Anodised aluminium |
| Colour |
Black |
| Focuser connection type |
Dovetail |
Why choose this focuser base?
- Quick and secure attachment to your telescope tube
- No vignetting - 78mm central opening lets light pass freely
- Durable black anodised aluminium construction
- Fits most standard 8″ Newtonian tubes
- Compatible with a wide range of TS Optics dovetail focusers
- Stable 90 x 90mm footprint for a firm focuser mount
