iOptron iAFS3 In-Line Automatic Telescope Focuser (3")

You can expect sharp focus with precise control and zero backlash with the 3" iAFS3 In-Line Automatic Telescope Focuser from iOptron. Adjusting at an incredibly fine 0.6µ per step, the focuser locks into position when movement stops for pinpoint control. It's compatible with ASCOM and INDI drivers so you can control (and power) it via USB-C from your computer. You can also add a power supply and move it with directional buttons or control it manually with using the dial. A camera angle adjuster is built in so you can frame photos to your liking. The temperature sensor is also built in and compensates for a moving focal plane.

The iAFS3 supports payloads up to 13.2 pounds. It comes with a standard 2" visual back for eyepieces; cameras or accessories such as filter wheels will need adapters for their thread size. Likewise, adapters are widely available for the focuser-OTA connection.