Rainbow Astro RST-300 Harmonic Mount

Home / Rainbow Astro RST-300 Harmonic Mount

Article number:	RST-300
Availability:	More on the Way to us
Delivery time:	More on the Way to Us

Counterweights Not Required
Only 8.5kg weight
Capacity 30kg (max 50kg)
Strain Wave Gear (Harmonic Drive)
Built-in brake (RA Axis)

5-years warranty

8.5kg

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.

Counterweights Not Required

Counterweights not required up to 30kg. You can prevent accidents by the observer or guest from hitting the counterweight. Since there is no need for a weight bar, it is good for wide use of a narrow observation room.

Freed from balancing

The performance of the worm gear mount is sensitive to the balance, but the RST-300 is not. When two telescopes are mounted side by side, it is difficult to balance left and right, but using the RST-300 does not have such difficulties. You don’t need to rebalance if you change accessories like a camera or guide scope.

Strain Wave Gear(Harmonic Drive)

Instead of worm gears, a new type of reducer called strain wave gear (harmonic drive) is used. Almost no backlash and no maintenance is required. As it is widely used in industrial robots, it is very durable.

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

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.

Mechanical

	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

Controller

	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

Included:

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

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