SV226 Filter Drawer System – Dual 1.25" & 2" Filter Support

The SV226 filter drawer allows fast, secure filter changes during astrophotography sessions. Designed for both 1.25" and 2" mounted filters, it features CNC-machined construction, an anti-light-leak body, and a dual-magnet retention system that provides strong, reliable alignment without the need for threaded rotations.

• Dual magnetic retention: Strong “snap-in” alignment makes filter changes quicker and easier than traditional screw-in filter wheels.
• Two filter holders included: 1.25" and 2" plug-and-play filter trays — no repeated threading in the dark.
• Compatible with your existing filters: Use the filters you already own and avoid upgrading sizes unnecessarily.
• CNC integrated body: Precision machined aluminium construction for durability, consistency and light-tight performance.
• 21mm optical path thickness: Designed to maintain back-focus accuracy; side lock screw adjusts tension to eliminate play.
• M42–M48 Adapter included: Ensures compatibility with a wide range of astrophotography cameras and imaging setups.
• Protective storage box: Keeps filter holders and parts organised when not in use.

Compatibility

Suitable for use with most imaging telescopes and cameras, including SV550 / SV503 OTA and F9198F / F9198K cameras. Works in imaging trains including flatteners, reducers and spacers.

Specifications

Note: Ensure your imaging system has correct back-focus spacing when adding any optical accessory.

SV226 Filter Drawer Integrated Molding Anti-Light-Leaking Design for Astrophotography

SV226 filter drawer adopts integrated CNC molding and anti-light leaking design. It can compatible with 1.25" & 2" specifications filters on the market. Strong magnetic attraction, prevent the filter from falling off.

Double Pair of Magnets

Compared with traditional screw rotation; magnet has stronger adsorption force;  which is convenient for you to install and use.

CNC Integrated Molding

The advanced processing can assure the quality; provide more accurate; consistent results; you can use it with confidence.

Filter Drawer Thickness 21mm

The thickness is related to back focal length; back intercept affects the quality of imaging; it limits the use of accessories and optical path length. Designed with the lock screw on the side of the filter drawer; the locking function is helpful on adjusting the tension to eliminate the gap; which is a double insurance for you.

The Parameters Of SV226 Filter Drawer

The SV226 filter drawer comes with the M42-M48 adapter to resolve the thread compatibility issue.

Use With Telescope

Connect the telescope to the focal reducer and  drawer filter; then connect the adapter to the camera. This SV226 filter drawer can use with SV550/SV503 OTA and F9198F/F9198K astronomy cameras.