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Modern Telescopes, India's largest telescope store proud to present world class mounts from .Rainbow Astro South Korea.


  • Counterweights Not Required

  • Only 8.5kg weight

  • Capacity 30kg (max 50kg)

  • Strain Wave Gear (Harmonic Drive)

  • Built-in brake (RA Axis)

  • 5-years warranty


Light weight Mount :-



Although the capacity is 30kg (maximum 50kg), the weight of the mount is only 8.5kg. It weighs about 35% compared to our worm gear mount and is less than 20% if we include the counterweight.


Built-in brake

The RA axis has a built-in brake system. When the mount power is off, the brake is activated to prevent the “back drive” phenomenon. “Back drive” refers to the phenomenon that the shaft rotates in the direction of gravity when the power of the strain wave gear mount is turned off.


CNC Machining

CNC machined aluminum alloy AL6061 is used for aircraft. That’s why it’s small, light and stiff. The beauty of the machined surface increases the collection value.




WiFi is built in. You can control the mount via the SkySafari app on your smartphone. Ascom Driver can be connected via WiFi as well as USB. GOTO and AutoGuide are now wireless.


GPS Receiver

GPS receiver is built in. The position and time of the observer can be entered accurately and conveniently.


Home Sensor

There is a built-in home sensor to find the mechanical origin. This is useful for permanently using Star Alignment data. Build an ultra-small remote observatory with the RST-300 mount.


Included Items :-


  • RST-300 mount

  • Hand controller (Hubo-i SE)

  • Cable for hand controller

  • USB cable

  • Power cable (Cigarette Lighter Plug)

  • Power cable (5.5×2.1 DC Jack)

  • AC-DC power adapter

  • Adapter for PoleMaster

  • Soft case

  • 5mm Hex Wrench





RST-300 Weightless Mount

Sales Tax Included
  • Features Specification
    Mount type Dual mount – German Equatorial, Alt-Azimuth
    Gear Strain wave gear (Harmonic Drive)
    Load Capacity 30kg(without counterweights), 50kg(with counterweights)
    Recommend Telescope 12inch Reflector, 7inch Refractor
    (without counterweights)
    Weight 8.5kg
    Volume 18.3 x 17.5 x 27.9 cm
    Material Aluminum alloy AL6061, Steel, Brass
    Surface coating Anodizing
    Gear size(RA) Model No. 25 (Based on HDS)
    Gear size(DEC) Model No. 25 (Based on HDS)
    Motor Swiss made Maxon DC Servo Motor
    Latitude range 0 to 90 degrees
  • Features Specification
    Max Slew Rate 1,200x (5deg/sec) – 16V DC
    1,000x (4deg/sec) – 12V DC
    Input Power DC 12V ~ 16V
    Power Consumption(Tracking, 12V) 0.4A
    Power Consumption (Slew, 12V) 4.0A
    PC Connection ASCOM Driver
    GPS Built-in (Hand Controller)
    WiFi Built-in (Hand Controller)
    Home Sensor Built-in
    Brake Built-in RA axis : To prevent back-driving
    High voltage, reverse polarity input protection Built-in
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