It is identical to the Sky Rover 130mm I'm currently using. TS have been through different focuser designs for their version but have ended up with the same one I'm using now. It used to have an odd M65 or M63 connection but they've since decided to standardise it to the M68.
If you want a telescope that you can use visually, this isn't one for you. It has a back focus of 74.5mm from the M68 thread on the draw tube so unless you get a special very short 1.25" diagonal you'll never achieve focus with an eye piece without laying on the ground
Due to the way that it is designed, it is technically a F/5 but with the interaction between rear flattener and correct back focus it is a photographic F/5.2 at 675mm focal length. It is a nice astrograph.