The William Optics FluoroStar 156 imaging/visual APO Series

FLT 156 mm (6.14-inch) Aperture f/7.8 Triplet Telescope OTA a Feather Touch 3.5-Inch Focuser attached.

It's f/7.8 (at f/5.5 with an APO X0.7 flattener) triplet air spaces (FPL53 Design).

To automate your focuser: It you are imaging/ viewing remotely, you can add an Optional Motorized Device to your cart designed for this Feather Touch 3.5-Inch Focuser, (see #WO-MD-FT35 for price and details).