Dark Clear Skies · SVBONY
SV226 M54 Filter Drawer
Prepare your filters. Keep your camera connected.
The SVBONY SV226 M54 filter drawer, SKU W9184C, brings side-access filter changes to an M54 imaging train. This complete assembly includes two holders for mounted 2-inch filters, so you can prepare a second filter before your session.
Change filters from the side
Withdraw the holder to change the filter while leaving the threaded camera connection assembled. Two pairs of magnets help locate the holder, while a locking screw adjusts retention and helps close gaps that could admit stray light.
One filter sits in the optical path at a time. The second holder lets you have another filter ready for a manual swap; this is not an automated filter wheel.
Connections for your imaging train
| Position | Fitting |
|---|---|
| Camera side | M54 × 0.75 male |
| Telescope side | M54 × 0.75 female |
| Mounted filter | M48 × 0.75 female, for a 2-inch filter |
| Supplied adapter | M54 male to M48 female; manufacturer-rated thickness 2mm |
The adapter provides an M48 connection on the telescope side. Check the thread size, pitch and gender on every adjoining component before ordering.
Plan the spacing before fitting
The drawer body is 20mm thick without the adapter. Include the effective spacing of any fitted adapter when matching your reducer or flattener’s required back focus.
SVBONY designed this M54 version with full-frame cameras in mind. Actual field illumination still depends on the complete optical system, filter aperture and distance to the sensor.
Choose the correct SV226 version
W9184C is the complete M54 drawer. Its holders are not interchangeable with those for the M42 SV226. The W9184B spare holder and SVBONY’s M42-version 2-inch-to-1.25-inch reducing adapter are not compatible with this model.
For the smaller-thread version, see our SV226 M42/M48 filter drawer. This W9184C package is specified for mounted 2-inch filters and includes no 1.25-inch reducing adapter.
Specifications
| Detail | Specification |
|---|---|
| Manufacturer / model | SVBONY SV226 M54 |
| SKU | W9184C |
| Filter format | Mounted 2-inch astronomy filters; one in use at a time |
| Body construction | CNC-machined aluminium |
| Body thickness | 20mm, excluding adapter ring |
| Retention | Two pairs of magnets and an adjustable locking screw |
| Manufacturer-stated weight | 115g, including adapter ring and one filter holder |
What is included
- One SV226 M54 filter drawer body.
- Two 2-inch filter holders in total.
- One M54 male-to-M48 female adapter.
- One 1.5mm Allen key.
Filters, camera, telescope and any additional spacers are sold separately.
Before your first session
Fit a compatible mounted filter to the holder and check that its cell clears the drawer. Seat the holder fully, secure the locking adjustment and confirm the spacing before imaging. After changing filters, check focus and use flat frames appropriate to each filter configuration.