The WandererAstro FETA M92 combines electronic focusing with tilt adjustment, correcting the angle of the sensor relative to the image plane. Three independent adjustment points move together for focusing or separately for tilt correction. When installed behind the corrector, the module also enables precise changes to the distance between the sensor and corrector, providing backfocus adjustment.
The mechanism offers 4 mm of travel and an effective positioning accuracy of 0.2 µm. Focusing and tilt correction share this travel: increasing the tilt reduces the range available to the focuser. A payload capacity of up to 8 kg, specified with the imaging train's centre of gravity 100 mm from the device, accommodates substantial imaging setups.
The 20 mm thick body has recessed M92×1 female threads on both sides. The distance between their mounting surfaces is 15 mm. The included adapters provide M92×1 male, M85×1 female or M85×1 male interfaces. The space occupied in the optical train must be determined according to the mounting method and mechanism position.
WandererEmpire provides control, while the ASCOM driver enables focuser operation in compatible software. Automatic tilt correction works with N.I.N.A. and the Hocus Focus plugin, using results from Aberration Inspector. A mechanical zero position with automatic calibration and saved presets facilitate repeatable operation and remote control.
• electronic focusing with tilt and backfocus adjustment
• three independently controlled adjustment points
• effective positioning accuracy of 0.2 µm
• payload capacity of up to 8 kg with the centre of gravity 100 mm away
• M92×1 interfaces on both sides and two included adapters
• automatic tilt correction with N.I.N.A., Hocus Focus and WandererEmpire
• WandererAstro FETA M92 module
• adapter providing an M92×1 male or M85×1 female interface
• adapter providing an M85×1 male interface
• 1 mm thick M92 spacer ring
• 1 m DC5521 power cable
• 1 m USB-A–USB-C cable with screw locking
• M3×6 countersunk hex socket screws
• flat-head screwdriver for securing the USB-C cable
• manufacturer: WandererAstro
• model: FETA M92
• SKU: WFETA92
• number of adjustment points: 3
• adjustment travel: 4 mm, shared by focusing and tilt adjustment
• effective positioning accuracy: 0.2 µm
• maximum payload: 8 kg with the centre of gravity 100 mm from the device
• telescope-side interface: M92×1 female or bolted connection
• camera-side interface: M92×1 female or bolted connection
• mounting holes: 12 M3 holes on each side
• maximum M92 thread engagement: 7 mm
• maximum M3 screw engagement: 5 mm
• distance between recessed M92 mounting surfaces: 15 mm
• body thickness: 20 mm
• mounting length with both standard adapters: 20 mm in the configuration described in the manual
• nominal power supply: 12 V DC / 1 A
• permitted voltage range: 10–15 V DC
• communication interface: USB 2.0 Type-C with screw locking
• zero position: fixed mechanical zero with automatic calibration available
• control software: WandererEmpire; ASCOM focuser driver
• automatic tilt correction: N.I.N.A. with Hocus Focus and WandererEmpire
• operating temperature: −30°C to +50°C
• body weight: approximately 750 g
