The EAF PRO is a robotic focuser that connects to your mechanical focuser and allows to autofocus via software or using the embedded buttons. The new generation of ZWO EAF continues the brands signature minimalist design, featuring a robust metal housing for a perfect fusion of form and function. Available in two versions: the EAF that need to be powered via USB-C port, and the EAF PRO that includes a lithium batter for a wireless and portable solution To connect the EAF PRO, you need to bolt the provided bracket to the housing of your focuser and connect the shaft of the EAF to the shaft under the single speed focusing knob, using the provided couplers. The new EAF Pro features a more universal Type-C interface for broad compatibility and easy installation, it is compatible with all the telescopes as its previous version and with the optional brackets it extends its applicability to more other models. The EAF Pro version comes with a built-in battery and Bluetooth connectivity, reducing power supply constraints. It also includes manual focus buttons, allowing direct adjustment even after installation — offering maximum flexibility and convenience. Both models deliver a more user-friendly focusing experience, achieving pinpoint focusing accuracy for breathtaking cosmic imagery. Micron-level Positioning Accuracy The ZWO EAF integrates a high-precision custom stepper motor with compact yet powerful performance. Featuring a 1:128 reduction ratio, it provides the motor with strong torque and precise control capabilities, achieving micron-level positioning accuracy. Each rotation responds precisely to commands, ensuring accurate and reliable focusing. 5kg High Load Capacity Astronomical observation equipment often requires the use of various heavy components. The ZWO EAF Pro, despite its compact size, can support a high load capacity of up to 5kg, as rigorously tested in ZWO Laboratory. Its powerful performance ensures stable operation of a wide range of equipment, meeting diverse observation needs. More Universal Type-C Interface The EAF Pro is an upgrade from the previous version, with its interface upgraded from Type-B to the more universal Type-C. Users can power the EAF directly via a Type-C connection to a camera, computer, or ASlAlR, it also supports wired communication via a Type-C interface. Simplifying cable management and reducing power load. Wireless Bluetooth Control The EAF Pro features a built-in low-power Bluetooth 5.0 chip, enabling wireless connectivity with ASIAIR and smart cameras. It is fully compatible with the ASIAIR APP, ASI Studio and ASCOM platform software, offering flexible and cable-free focus control. Built-in Lithium Battery Powered by an integrated lithium battery, the EAF Pro frees you from external power constraints and enables truly wireless operation. It offers greater flexibility and ease of use to meet diverse needs. One-Week Endurance *Tested under standard conditions in the ZWO lab at room temperature. The device performed 2 focusing operations per hour, with each test session lasting 8 hours per night. Under these conditions, it was able to run stably for 7 consecutive nights. Integrated Focusing Button The EAF Pro features integrated focusing buttons on its body, allowing users to make quick and precise adjustments even after installation. This design greatly enhances usability and flexibility, enabling seamless focusing across a variety of observing and imaging scenarios. Extensive Software Support The EAF Pro can be used in combination with ZWO software and devices for the automatic focusing (frame and focus). The compatibility with ASCOM and INDI drivers allows to use it with third party software too. The optional EAF hand controller is made of high-quality, ABS material to ensure a comfortable grip. The hand controller provides an easy method of focusing the telescope, featuring IN and OUT buttons, allowing for smooth manual focusing without relying on a computer or smartphone. This design also minimizes subtle vibrations during operation, helping to maintain precise focus. This coupled with the temperature sensor are "must-have" options for EAF users. When used with ASIAIR, the EAF Pro is compatible with the ASIAIR Plus (RK vesion) and the entire ASIAIR camera line-up It is compatible with the following models: ASIAIR ASIAIR Pro ASIAIR Mini ASIAIR Plus Compatibility Notice: Due to the increased torque of the new EAF motor, higher power input is required. This exceeds the USB output capability of earlier ASIAIR, making it incompatible with the first-generation ASIAIR and the second-generation ASIAIR Pro. For stable operation, it is recommended to use the new-generation ASIAIR. NOTE: There are two versions of the ASIAIR Plus. You can identify the version by the IC number on the device: How to install the focuser 1. Remove the coarse adjustment knob of the telescope focuser using a suitable sized wrench. 2. Install the coupling on the telescope focuser shaft and tighten the locking screw with the 2mm hex wrench. 3. Attach the focuser body to the coupling, align the EAF motor shaft flat surface with the locking screw, and tighten the locking screw using the provided 2mm hex wrench. 4. Secure the EAF body to the bracket and the bracket to the matching mounting holes in the focuser assembly using the supplied M4 screws. Ensure that the bracket is flush with the EAF mounting surface without any gaps, and that it is parallel to the focuser body surface. 5. Check and ensure that all the connections of the EAF are secure. This completes the hardware installation of the EAF. 6. For curved focusers like the one in the image above, you only need to use the original locking screws and 3 washers to secure the EAF. There is a groove at the bottom of the EAF bracket, and a single screw provides sufficient stability. Specifications Dimensions 41 x 52 x 73.4mm Motor Stepper motor, step angle 7.5 degrees, reduction ratio 1:128 Power supply USB Type-C (5V 500mA) Built-In Battery Data port USB Type-C Weight 258g Load capacity 5 kg EAF Pro Mechanical Diagram Items included Downloads ZWO software and drivers
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