William Optics 3.5 Rotator Rotolock Visual Back: kantelvrij wisselen op 3,5 inch
The William Optics 3.5-inch Rotolock visual back threads onto the 3.5-inch focuser of the large FluoroStar refractors and provides a generous 2-inch opening with a Rotolock clamping system on the eyepiece side. A quick twist of the locking ring and your eyepiece or star diagonal is clamped evenly all around: tilt-free, centered, and scratch-free.
Het Rotolock-principe werkt als een twist-lock: geen losse klemschroeven, wisselen gaat met een handbeweging, ook met zware 2 inch oculairs en met handschoenen aan. Kies de kleurstelling die bij de accenten van je FluoroStar past; technisch zijn de uitvoeringen identiek.



For the large FLT refractors
Made for the 3.5-inch focusers and extension tubes of the William Optics FluoroStar line. This is how you use your complete 2-inch eyepiece and diagonal park on the largest WO tubes, without play in the chain.
Featured accessories
Combine the visual back with the Dura Bright 2-inch diagonal for comfortable visual observation on your FLT.
For whom yes and for whom no
- ✓ Owners of a FluoroStar with 3.5-inch focuser
- ✓ Visual observers who frequently and quickly switch eyepieces
- ✗ Owners of 2.5 or 3-inch focusers: choose the appropriate Rotolock or rotator adapter
Specifications
| Type | Rotolock visual back |
| Telescope silk | 3.5-inch focuser (FluoroStar) |
| Accessory side | 2-inch, Rotolock clamping system |
| Material | Aluminum |
You can find more accessories for this merk at the William Optics merk Page.





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