Hi Greg. I noticed a mention of the ZWO EAF. I recently installed the EAF on my new Askar 300 OTA and have been giving it a run with SGP PRO. The installation, set up and configuration worked fine and the auto focus results are great. The only thing I found was that I did have to add some backlash compensation to achieve a nice U shaped focus curve. Not a problem though as once I added this in it worked fine.
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