WD-17S is the first harmonic drive mount based on Servo Direct Drive technology. It has only single stage reducer – backlash less strain wave reducer, and eliminate the transmission/assembly error from belt/planetary gear solution. That’s why we called “harmonic drive” mount, providing high precision guiding performance to you.
The mount weighs 4.3kg and carries telescopes up to 13.5kg without a counterweight. With the counterweight and counterweight rod (optional with M12 thread) the mount can also carry telescopes weighing up to 20 kg.
Optimize base can be smoothly fine adjusted with CNC fine tooth screw and gap control design, which make it much easier for polar alignment.

Ideal entry-level model with output of linear and equivalent horizontal range (EHR) from 10m to 1,100m / 1,200yds
High-precision rangefinding up to 1,800m / 2,000yds
Outstanding, easy-to-read LED display with automatic brightness control
Brilliant, clear image, high level of detail – even at twilight

Top optical quality, for flawless observation and precise target acquisition.
First time in a compact Leica Rangemaster: advanced Applied Ballistics software for maximum precision.
Very precise laser rangefinding from 10 to 2,600 meters, in just 0.3 seconds.
Full connectivity to the Leica Ballistics App.

Skywatcher celebrates its 25th year with an instrument with an elegant commemorative design.
Equipped with premium Maksutov Skymax optics with exceptional contrast and sharpness especially in observations of the Moon, planets and double stars, it uses a compact table mount with automatic pointing via Wifi (from tablet or smartphone).