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.

The small ToupTek 678M offers optimal performance for planetary imaging and driving. Low readout noise, high dynamic range, peak QE >83%, AR protection window and much more!
This camera weighs only 90g and has a 31.8mm barrel! 3840x2160 pixels while the pixel size is 2 μm.

The SONY IMX585 sensor has a diagonal of 12.1 mm and 2.9x2.9 micron pixels, the 1/1.2" format is a new, even more performing sensor, with 8.3MP and a resolution of 3840x2160.
With this sensor it is possible to photograph an entire cluster of galaxies and show the details of each one at the same time!
The chamber also features dual-stage TEC Cooling with a thermal delta equal to 40° real degrees.

The SONY IMX585 sensor has a diagonal of 9.08mm and 2.9x2.9 micron pixels, 1/1.2" format
With this sensor it is possible to photograph an entire cluster of galaxies and show the details of each one at the same time!
The chamber also features TEC Cooling with a thermal delta of the ambient temperature up to -35°.

The SONY IMX533 sensor has a diagonal of 16.0 mm and 3.76x3.76 micron pixels, the 1" format is a new, even more performing sensor, with 9.07MP and a resolution of 3008x3008.
With this sensor it is possible to photograph an entire cluster of galaxies and show the details of each one at the same time!
The camera also features dual-stage TEC Cooling with a thermal delta equal to 40° real degrees.

The SONY IMX571 sensor has a diagonal of 28.3 mm and 3.76x3.76 micron pixels, the APS-C format is a new, even more performing sensor, with 26MP and a resolution of 6248x4176.

With this sensor it is possible to photograph an entire cluster of galaxies and show the details of each one at the same time!

The camera also features dual-stage TEC Cooling with a thermal delta equal to 35° real degrees.

Using a new large aperture lens and CMOS, under the same ambient brightness, the exposure time of the OCAL3.0 electronic collimator is only 1/20 of that of the second-generation electronic collimator. If the light source is too strong, it is recommended to reduce the gain rather than simply reducing the exposure time. Now, new collimators can adjust the telescope's collimation in darker environments.

The clarity of the OCAL3.0 electronic collimator image has been greatly improved. Now you can see clearer primary mirror marks and more reflection information, and it still performs well when equipped with a correction mirror.