Pegasus Astro

Pegasus Astro Dual Motor Focus Controller (DMFC)

£175.00

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Dual Motor Focus Controller

Focus fast, reliable , and accurate your telescope using a stepper or DC motor and our controller.

Version3: Same features, more powerful motor outputs, in a very compact size!

Dual Motor Focus brings a decade of experience in astrophotography and telescope focusing concepts. The evolution of technology in astronomy requires a system that will assist the focusing of the telescope with great accuracy. Fast optics and modern camera devices require automatic focusing in every small period as the temperature can affect the focal length and modify the optimal focus position. Pegasus Dual Motor Focus Controller (DMFC) has been developed to meet these requirements.

Dual mode


The Dual Motor Focus Controller supports two kinds of motor types:

High-Resolution Stepper motors (unipolar and bipolar) for absolute position focusing.

DC motors 
by its Pulse Width Modulation duty cycle control.
The controller can switch motor mode from its software, Mode can be instantly changed (with one mouse click) from ‘stepper’ to ‘dc’ motor and saved in the controller’s EEPROM memory.

Manual and PC operation.


The controller can be operated by PC using its USB2 connectivity. A manual operation by utilising the digital encoder on the side of the controller simulates the knob of your real focuser. Turn the knob as it is the knob of your telescope’s focuser. If you press it, speed of the motor will be reduced to 1:10.

Dual Colour Indicator


A dual colour light emitted diode (Green / Yellow) is fitted on the side of the unit. Each colour indicates speed and the led can be turned on or off by its software during an observing session. Keep it pressed to disable the knob.

Backlash Compensation


Controller can compensate the backlash you might encounter in your system. Although our motor has very low backlash other setups might need this feature. Backlash compensation is supported from a function inside controller’s firmware.

Additional Information


Temperature Probe


An external digital temperature sensor input is located near the motor connector. A digital probe of one (1) meter length is supplied. The probe can be placed near the focuser so the exact temperature of the focuser/environment can be seen through the supplied software or ASCOM driver (probe is included in the package)

ASCOM supported


The controller is fully compatible with the latest ASCOM 6

FocusCube Zero For SCTs ascom_dmfc

INDI (Open Astronomy Instrumentation) supported

Supported Motors


We have successfully tested and controlled the following stepper motors:

Please note that each motor requires its own cable due to different pin-out selection of each manufacturer. * We optionally provide any of these cables. Check cable type SKU at below table.

STEPPER MOTOR CABLE TYPE (SKU)
Pegasus Motor Focus (v1 & v2) Straight RJ45 Network Cable
Starlight HSM 25 / 30 / 35 PEG-CMOT-HSM
Starlight MSM 25 / 30 / 35 PEG-CMOT-MSM
Starizona Micro-Touch PEG-CMOT-MSM
Rigel nStep Motors PEG-CMOT-MSM
Moonlite Stepper Motor PEG-CMOT-RJ45DB9
Robofocus Stepper Motor PEG-CMOT-RJ45DB9
Lakeside Stepper Motor PEG-CMOT-RJ45DB9
Lacerta Motor PEG-CMOT-LCRT

In the Box


1 x Dual Motor Focus Controller
1 x Temperature Sensor (0.6m)
1 x USB type B Cable (1.8m)

Technical Specification


Type Value
Supply Voltage 12Volt DC (Can accept 5V for 5V motors)
Motor Compatibility DC motor – adjustable frequency PWM
Unipolar stepper motors
Bipolar stepper motors
Motor Output DC motor, max 1 Amp
Unipolar / stepper motors, max 2.0 Amps (1.0 Amps per phase)Continuous output current per channel: 1 A
Peak output current per channel: 3 A
Continuous paralleled output current: 2 A
USB Connectivity USB 2.0 Type B plug
Thermal Sensor Resolution 9-bit Celsius temperature measurements
Power Input Connector 2.1mm Centre Positive Socket
Motor Connector RJ45
Dimensions 66mm x 66mm x 28 mm
Weight (including bracket) 280g

Pegasus Astro Dual Motor Focus Controller (DMFC)

£175.00