SVBONY SV133 1.25″ Manual 5-Position Filter Wheel

Product Overview

The SVBONY SV133 is a manual filter wheel with five numbered positions for 1.25″ filters on the standard M28.5 × 0.6 thread. It lets you change filters with a camera attached or an eyepiece in place, without breaking down the optical train. It attaches to the focuser either through the supplied 1.25″ nosepiece or by T-thread, and ships with a 1.25″ eyepiece adapter and a T-2 camera adapter. The metal body weighs 351.5 g.

Who It's For

This is a good match if you image with a T2-threaded DSLR adapter or astronomy camera and want to rotate between colour, narrowband or light-pollution filters during a session, or if you observe visually and like to compare filters on the same target without unscrewing them from eyepieces.

Key Features & Design

• Five numbered positions: precise positioning and numbered slots so you know which filter is in the path.
• 1.25″ filters, M28.5 × 0.6: the standard 1.25″ filter thread.
• Two ways to connect: 1.25″ focuser nosepiece or T-thread.
• Camera or eyepiece side: T-2 camera adapter and 1.25″ eyepiece adapter both included.
• Metal body: with a locking ring and 42 mm metal dust cap.

Recommended Uses

• LRGB or narrowband imaging with a T2-fitted DSLR or CCD/CMOS camera.
• Lunar and planetary filter comparison at the eyepiece.
• Nebula filter testing visually, switching between filters on the same object.

Compatibility and Accessory Notes

• Filters: 1.25″ filters on the M28.5 × 0.6 thread, including SVBONY 1.25″ filters.
• Telescope side: 1.25″ focuser nosepiece (included) or T-thread connection.
• Camera side: T-2 camera adapter included, for DSLR T-rings and T2-threaded astronomy cameras.
• Eyepiece side: 1.25″ eyepiece adapter included.

If you are planning the wheel into an imaging train with a specific camera and corrector, send us your setup and we will work out the spacing with you.

What's in the Box

• SV133 1.25″ 5-position filter wheel
• 1.25″ eyepiece adapter
• 1.25″ focuser nosepiece
• T-2 camera adapter
• Locking ring
• 42 mm metal dust cap

Good to Know Before You Order

• Filters sold separately.
• Manual operation: positions are changed by hand; there is no motor or computer control.
• Optical path length: SVBONY does not publish the wheel's thickness, which is the figure to account for in an imaging backfocus budget — we can help confirm it for your train.

Frequently Asked Questions

Is it difficult to set up?

No. Thread your filters into the five positions, attach the nosepiece or T-thread to your focuser, and fit the camera or eyepiece adapter on the other side.

Can I use it visually?

Yes. The included 1.25″ eyepiece adapter lets you observe through the wheel and switch filters at the eyepiece.

Does it fit 2″ filters?

No, this wheel takes 1.25″ filters. SVBONY makes a separate 2″ version of the SV133.

Is it motorized?

No, it is a manual wheel.

Bottom Line

In short: a 351.5 g manual five-position wheel for 1.25″ filters, with nosepiece, T-2 and eyepiece adapters included, for quick filter changes in imaging or visual setups.