ZWO EAF - Electronic Automatic Focusmotor
ZWO EAF - Electronic Automatic Focusmotor - 12V version
Click here for the new 5V version: https://www.365astronomy.com/zwo-eaf-electronic-automatic-focusmotor-new-5v-version
Introducting the new ZWO EAF, the lateset innovation from the engineers at ZWO. This electronic focuser enables precise, dynamic focus control for planetary and deep-sky imaging.
Standard Version: EAF body, flexible coupling, motor bracket, USB2.0 cable.
Advanced Version: EAF body, flexible coupling, motor bracket, USB2.0 cable, hand controller, temperature sensor.
Size: 60mm x 50mm x 40mm
Power port: 12V DC 5.5mm x 2.1mm, center positive
Data port: USB2.0 port
Additonal brackets for various focusers are under development.
A customer confirmed that the ZWO EAF-S is compatible with our Sharpstar 61EDPH.
Once fitted it works beautifully with the ASIAIR. Hoping the autofocus update won’t take too long...
- There is no clutch in the EAF. This means that once fitted the manual focus cannot be used. Attempting to do so is likely to damage the internals of the EAF. It also means that, until the EAF handset is released, the telescope cannot be focused without using the ASIAIR. The handset will provide a means of adjusting the focus via the EAF without using ASIAIR.
- The default step sizes in ASIAIR are not sufficient to give visible movement of the focuser. This has led to a few public cries of “duff equipment” on Fb. For initial testing I set Large Step to 1000 and Small Step to 50 in ASIAIR Focuser Settings.
- There has been one shout of SW Powertank wouldn’t power the EAF, but that will need checking out. Mine runs fine from a Celestron Lithium Pro power source which is already powering the mount, ASIAIR and two cameras (one cooled).
- T J Connolly has put a good user guide to EAF usage on the ASIAIR Fb page."
Above image: Courtesy of Robin Berry
Another example of fitting an EAF on a Skywatcher Esprit 120, this time without drilling...:
Above image: Courtesy of Damien Finlayson.