ZWO EFW 7 × 36 mm electronic filter wheel (ZWO, SKU: EFW 7x36). The filter wheel holds seven unmounted filters with a diameter of 36 mm. It allows an LRGB set and Hα, O III and S II filters to be installed together and selected through software. This version with T2 connections has a CNC-machined aluminium body and an NPM stepper motor.
• seven positions for unmounted 36 mm filters
• power and control through a single USB 2.0 cable, including from a compatible camera’s USB hub
• filter selection by rotating the carousel in either direction
• aluminium housing with a thickness of 20 mm
• control through ASCOM or an application using the manufacturer’s SDK
• filter wheel EFW 7 × 36 mm
• cap, 1.25"
• nosepiece T2 / 1.25"
• holder, 1.25", with a T2 connection
• adapter T2–T2 with male threads
• filter masks
• cable for USB 2.0 connection
• screwdriver
• screws M2 with washers for securing the filters
• number of positions: 7
• filter diameter: 36 mm; unmounted filters
• telescope-side connection: T2, M42 × 0.75
• camera-side connection: T2, M42 × 0.75
• drive: NPM stepper motor, Japan
• rotation directions: clockwise and counterclockwise
• power: 5 V through USB; maximum current approximately 120 mA
• interface: USB 2.0, HID device
• control: ASCOM or SDK; the ASCOM platform must be installed before its driver
• versions of Windows supported by the legacy drivers: XP, 7, 8 and 10, 32- and 64-bit; application and driver compatibility must match the operating system
• body material: CNC-machined aluminium
• body thickness: 20 mm
• weight: approximately 400 g
• warranty: 24 months
The wheel allows filters to be changed without removing the camera. Its thickness and the optical spacing required by the camera and corrector must be allowed for when assembling the imaging train.
