Svbony SV226 2" filter drawer holder

This 2-inch filter drawer holder from SVBONY makes adding or swapping filters during deep sky astrophotography quicker and more convenient, with magnetic retention and a compact CNC-machined body that aims to reduce light leakage and maintain alignment. It suits users who want to use existing 1.25-inch and 2-inch filters without repeated screw changes, saving time when working at the eyepiece or on a mount under low light.

Key Points

The drawer uses a double magnet system that holds filter carriers firmly in place, so installation and removal are faster and less fiddly than traditional screw rotation. This magnetic approach is particularly handy during night sessions where speed matters, and it reduces handling of small parts. 🪄

Compatibility covers both 1.25-inch and 2-inch standard filter plates, allowing reuse of current filters and avoiding extra expense on new sizes. The holder includes a locking screw to adjust tension and remove any play, providing a secondary mechanical safety for secure operation. Note that the drawer thickness affects back focal distance, so consider your camera and reducer spacing when fitting accessories. ⚙️

The body is machined with integrated CNC processing to improve dimensional accuracy and finish. According to the manufacturer, this aims to deliver consistent mounting and alignment across repeated use. An M42 to M48 adaptor is supplied for camera-side connection, and the filter thread on the holder accepts female filter mounts.

Technical Specifications

• Name: SVBONY SV226 2" Filter Drawer Holder
• Thread: M48×0.75 (camera-side adaptor included)
• Filter sizes supported: 1.25-inch and 2-inch
• Construction: CNC machined integrated body
• Features: Double magnetic retention, locking screw to reduce play

Usage Recommendations

When fitting the drawer to a telescope and focal reducer, check the available back focus since the thickness of the drawer and any adapter will change the optical train. If you are using thick filters or additional adaptors, some fine adjustment of spacing may be necessary to avoid vignetting or loss of focus. For those using dedicated planetary or deep sky cameras, the M48 thread offers a common connection, but verify your camera thread matches the male adaptor or use an appropriate converter.

The magnetic system simplifies filter swaps during imaging runs, but consider that very heavy multi-filter assemblies may still benefit from mechanical support to reduce stress on the focuser. Also, while the design aims to limit stray light, careful baffling and use of dew shields remain useful measures with fast focal ratios.