The WandererAstro ETA M54 is an electronic corrector designed to adjust the sensor tilt and back focus of an astronomical imaging setup. It allows you to control these settings remotely, without having to directly adjust the tilt screws during a session. Its three-point system is intended for setups where sensor alignment and the distance between optical elements require special attention.
CHF 769.00incl. Swiss VAT
Reference WETA54
Will be ordered for you
Timeframe: 10 days to 3 weeks
Estimated shipping: Between November 27 and December 2, 2026
The WandererAstro ETA M54 is an electronic corrector designed to adjust the sensor tilt and back focus of an astronomical imaging setup. It allows you to control these settings remotely, without having to directly adjust the tilt screws during a session. Its three-point system is intended for setups where sensor alignment and the distance between optical elements require special attention.
Three motors and three encoders operate independently to adjust the mechanism’s position. WandererAstro specifies a travel range of 1.2 mm, a motor resolution of 0.3 µm per step, and a positioning accuracy of up to 2 µm. These values describe the mechanism; the actual results also depend on the instrument, the camera, and the optical train configuration.
The ETA can be mounted in front of a camera, a filter wheel, or a compatible optical splitter. When screwed directly onto camera-side equipment, the manufacturer specifies that it occupies 5 mm of back focus or focus travel. In many setups, it is still possible to maintain a back focus of 55 mm, but this value is not guaranteed for all configurations. You must add up the distances and check the mounting specifications for your specific equipment before installation.
The M54 female thread integrated into the ETA is intended for the telescope side. The manufacturer advises against using it to connect a device on the camera side, to avoid damaging the mechanism. For a threaded connection on the camera side, a specific M54 female adapter is available separately. Direct screw mounting is another option if the camera’s mounting points are compatible.
WandererAstro provides several examples of setups using ZWO, QHYCCD, ToupTek, and Player One equipment. These examples do not guarantee compatibility for every model: the diameter, threads, screw locations, and back focus must be checked for the intended setup. Without an optical splitter, direct mounting on a compatible camera is still possible; a filter wheel adapter may be required for other configurations.
The manufacturer limits the total weight of equipment mounted behind the ETA to 3 kg. It is intended to be installed in front of the camera, the filter wheel, or the optical splitter, and the manufacturer advises against placing it in front of field correctors, reducers, or heavy eyepiece holders. These limits are important for maintaining the rigidity of the assembly. Before ordering, check the weight of the components on the camera side and ensure they can be securely mounted.
The WandererEmpire software allows you to control the ETA and view its settings. WandererAstro also indicates integration with NINA for automatic tilt adjustment. The settings and duration of the operation depend on the configuration and the images analyzed; refer to the manufacturer’s documentation for software setup.
The device is powered via USB (5 V, 0.5 A) and uses a USB 2.0 Type-B connection. It weighs 470 g. The manual specifies an operating temperature range of −25 to 50 °C. The unit is designed to be integrated into an optical train: the camera, optical splitter, and other equipment shown in the illustrations are not included.
The manufacturer's box art shows the ETA M54, a 1-meter USB 2.0 cable, M2.5 screws (4 mm and 10 mm), and a 0-mm M48 female-to-M54 male adapter. This included adapter is different from the optional M54 female camera-side adapter. Check the parts you received and the intended assembly before proceeding.
| Function | Electronic tilt and back focus adjustment |
|---|---|
| Setting | Three independent motors and three encoders |
| Race | 1.2 mm |
| Engine resolution | 0.3 µm per step |
| Positioning accuracy | Up to 2 µm |
| Back focus in use | 5 mm, mounted directly with screws on camera-side equipment |
| Maximum downstream load | 3 kg |
| Telescope connection | M54 female |
| Camera-side connection | Screw-on; optional M54 female threaded adapter available |
| Power and Connection | USB 2.0 Type-B, 5 V, 0.5 A |
| Weight | 470 g |
| Operating temperature | −25 to 50 °C, according to the manufacturer's manual |
