WarpAstron WarpDrive WD-20E Direct Drive EQ / Alt-Az Mount
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- Dual-encoder servo direct-drive system with true RA axis feedback
- Ultra-low periodic error of ±3 arcseconds
- 44 lbs payload capacity, or 66 lbs with counterweights
- Lightweight 12.5 lbs (5.7 kgs) mount head for portable imaging
- Built-in GPS, Wi-Fi, Bluetooth, and USB Type-C connectivity
- Included color OLED touchscreen hand controller provides direct access to GoTo, tracking, GPS, power monitoring, safety limits, wireless settings, and night-vision controls
WarpAstron WARPDRIVE WD-20E Harmonic Equatorial / AltAz Mount
The WD-20E expands the WARPDRIVE EC Series with a precision-focused drive system built for responsive, consistent tracking. Its proven belt-free Servo Direct Drive architecture pairs with high-resolution absolute feedback at the final RA output axis, allowing the servo motor to drive the strain-wave reducer directly while the encoder measures the true movement of the telescope-carrying axis. This combination delivers direct response, accurate position feedback, and individually verified performance. The WD-20E also includes the new Advanced Hand Controller, featuring a 2-inch OLED touch display, precise Hall-effect joystick, built-in GPS, and wireless connectivity for faster, more intuitive control at the mount. Any telescopes, tripods, cameras or other accessories images are not included with this mount head purchase.
WARPDRIVE WD-20E Standout Features
Extended Guiding Exposure
Lower periodic error gives your guiding system a cleaner signal, so you can safely extend exposure time from 1s to 3s or more.
Less Affected by Conditions
Longer guiding exposures help average out short-term atmospheric seeing fluctuations, preventing the mount from making unnecessary corrections and producing smoother, more consistent tracking.
Adventure Ready
Weighing just 12.5 lb (5.7 kg), the compact WD-20E mount head is easy to transport and set up, making it ideal for backyard imaging or trips to remote dark-sky locations
Complete Wireless Control at Your Fingertips
Manage your mount directly from the controller’s built-in dashboard, with real-time access to coordinates, mount status, slew rate, tracking, pier side, and more. Choose from seven slew speeds, access Home, Reset, Park, Unpark, and solar, lunar, or sidereal tracking modes, or quickly locate Solar System, Messier, NGC, IC, and named objects through the GoTo menu. Built-in GPS supports automatic location and time-zone syncing, while Wi-Fi access-point and Bluetooth settings provide flexible wireless connectivity. You can also monitor input voltage, total load, and power telemetry, configure movement limits and motor-current thresholds, and activate a dimmable red night-vision interface for comfortable use in the dark.
True Axis Feedback with Ultra-Low Periodic Error
An absolute encoder positioned directly on the RA axis output measures the axis’s true position and corrects errors across the entire drive system—not just the strain wave gear. This closed-loop feedback reduces residual periodic error from a typical strain wave gear rating of under ±15 arcseconds to less than ±3 arcseconds, delivering smoother tracking and greater imaging accuracy.
Dual-Encoder Servo Direct Drive
The dual-encoder servo direct-drive system combines a responsive, high-torque servo motor with a near-zero-backlash strain wave gear. An input encoder provides instant corrections, while an output absolute encoder measures the axis’s actual position instead of estimating it from the motor. With no belts or elastic drive components, the system maintains consistent accuracy across changing temperatures and extended use while delivering ultra-low periodic error. Each unit also includes an axis-specific periodic error report for verified performance.
Payload Capacity Built Around Your Setup
The WD-20E supports up to 50 N·m of recommended payload torque without a counterweight, with a maximum limit of 60 N·m. Actual weight capacity depends on how far the payload’s center of gravity sits from the RA axis: compact, closely balanced setups can carry more weight, while longer imaging trains require a lighter payload for optimal tracking performance.
Specifications
- Mount Type: Equatorial / Altazimuth
- RA Reduction Gear: 20 Strain Wave Reducer
- DEC Reduction Gear: 17 Strain Wave Reducer
- RA Drive: Dual Encoder Servo Direct-Drive
- DEC Drive: Servo Direct-Drive
- Output Encoder: High-Resolution Absolute Encoder at RA Axis Output
- Motor Type: BLDC Servo Motor
- Mount Head Weight: 5.7 kg (12.5 lb)
- Standard Load Capacity: 22 kg (44 lb) / 50 Nm
- Maximum Load Capacity: 30 kg (66 lb) with Counterweights / 60 Nm Maximum
- Materials: AL6061 Aluminum, Stainless Steel, Brass
- Brake: RA Axis, 45 Nm
- Dovetail Saddle: Vixen & Losmandy
- Counterweight Shaft: M12, 1.75 mm (0.069 in) Pitch
- Maximum Slew Rate: 10°/sec
- Altitude Adjustment Range: 0°–90°
- Altitude Coarse Adjustment: 3 Positions
- Altitude Fine Adjustment: 30°
- Azimuth Adjustment Range: ±8°
- Operating Temperature: -25°C to 45°C (-13°F to 113°F)
- Periodic Error: ±3 Arcseconds, Encoder Corrected
Controller Specifications
- Control System: OnStepX
- Saddle Power: None
- Hardware Safety Limits: EC Hour-Angle Limit (based on RA absolute encoder) and AEB (Automatic Emergency Brake & Reverse)
- Software Safety Limits: Overhead, Horizon, and Meridian Limits
- Communication Protocols: ASCOM / INDI / LX200 / INDIGO
- RA Home Control: Absolute Encoder
- DEC Home Control: Optical Homing Sensor
- PC Connection: USB Type-C
- Time / Location: GPS on Advanced Hand Controller
- Power Input: 12–25V, 5.5 × 2.5 mm DC, 5A (motion only)
- Wireless Connectivity: Wi-Fi (AP / Station Modes) / BLE on Advanced Hand Controller
- Advanced Hand Controller: 2-inch OLED Touch Display, Hall-Effect Joystick, GPS, Wireless, BLE
WD-20E Structural Diagram
Other Information
- Country of Manufacture: China
WarpAstron WARPDRIVE WD-20E Harmonic Equatorial / AltAz Mount
The WD-20E expands the WARPDRIVE EC Series with a precision-focused drive system built for responsive, consistent tracking. Its proven belt-free Servo Direct Drive architecture pairs with high-resolution absolute feedback at the final RA output axis, allowing the servo motor to drive the strain-wave reducer directly while the encoder measures the true movement of the telescope-carrying axis. This combination delivers direct response, accurate position feedback, and individually verified performance. The WD-20E also includes the new Advanced Hand Controller, featuring a 2-inch OLED touch display, precise Hall-effect joystick, built-in GPS, and wireless connectivity for faster, more intuitive control at the mount. Any telescopes, tripods, cameras or other accessories images are not included with this mount head purchase.
WARPDRIVE WD-20E Standout Features
Extended Guiding Exposure
Lower periodic error gives your guiding system a cleaner signal, so you can safely extend exposure time from 1s to 3s or more.
Less Affected by Conditions
Longer guiding exposures help average out short-term atmospheric seeing fluctuations, preventing the mount from making unnecessary corrections and producing smoother, more consistent tracking.
Adventure Ready
Weighing just 12.5 lb (5.7 kg), the compact WD-20E mount head is easy to transport and set up, making it ideal for backyard imaging or trips to remote dark-sky locations
Complete Wireless Control at Your Fingertips
Manage your mount directly from the controller’s built-in dashboard, with real-time access to coordinates, mount status, slew rate, tracking, pier side, and more. Choose from seven slew speeds, access Home, Reset, Park, Unpark, and solar, lunar, or sidereal tracking modes, or quickly locate Solar System, Messier, NGC, IC, and named objects through the GoTo menu. Built-in GPS supports automatic location and time-zone syncing, while Wi-Fi access-point and Bluetooth settings provide flexible wireless connectivity. You can also monitor input voltage, total load, and power telemetry, configure movement limits and motor-current thresholds, and activate a dimmable red night-vision interface for comfortable use in the dark.
True Axis Feedback with Ultra-Low Periodic Error
An absolute encoder positioned directly on the RA axis output measures the axis’s true position and corrects errors across the entire drive system—not just the strain wave gear. This closed-loop feedback reduces residual periodic error from a typical strain wave gear rating of under ±15 arcseconds to less than ±3 arcseconds, delivering smoother tracking and greater imaging accuracy.
Dual-Encoder Servo Direct Drive
The dual-encoder servo direct-drive system combines a responsive, high-torque servo motor with a near-zero-backlash strain wave gear. An input encoder provides instant corrections, while an output absolute encoder measures the axis’s actual position instead of estimating it from the motor. With no belts or elastic drive components, the system maintains consistent accuracy across changing temperatures and extended use while delivering ultra-low periodic error. Each unit also includes an axis-specific periodic error report for verified performance.
Payload Capacity Built Around Your Setup
The WD-20E supports up to 50 N·m of recommended payload torque without a counterweight, with a maximum limit of 60 N·m. Actual weight capacity depends on how far the payload’s center of gravity sits from the RA axis: compact, closely balanced setups can carry more weight, while longer imaging trains require a lighter payload for optimal tracking performance.
Specifications
- Mount Type: Equatorial / Altazimuth
- RA Reduction Gear: 20 Strain Wave Reducer
- DEC Reduction Gear: 17 Strain Wave Reducer
- RA Drive: Dual Encoder Servo Direct-Drive
- DEC Drive: Servo Direct-Drive
- Output Encoder: High-Resolution Absolute Encoder at RA Axis Output
- Motor Type: BLDC Servo Motor
- Mount Head Weight: 5.7 kg (12.5 lb)
- Standard Load Capacity: 22 kg (44 lb) / 50 Nm
- Maximum Load Capacity: 30 kg (66 lb) with Counterweights / 60 Nm Maximum
- Materials: AL6061 Aluminum, Stainless Steel, Brass
- Brake: RA Axis, 45 Nm
- Dovetail Saddle: Vixen & Losmandy
- Counterweight Shaft: M12, 1.75 mm (0.069 in) Pitch
- Maximum Slew Rate: 10°/sec
- Altitude Adjustment Range: 0°–90°
- Altitude Coarse Adjustment: 3 Positions
- Altitude Fine Adjustment: 30°
- Azimuth Adjustment Range: ±8°
- Operating Temperature: -25°C to 45°C (-13°F to 113°F)
- Periodic Error: ±3 Arcseconds, Encoder Corrected
Controller Specifications
- Control System: OnStepX
- Saddle Power: None
- Hardware Safety Limits: EC Hour-Angle Limit (based on RA absolute encoder) and AEB (Automatic Emergency Brake & Reverse)
- Software Safety Limits: Overhead, Horizon, and Meridian Limits
- Communication Protocols: ASCOM / INDI / LX200 / INDIGO
- RA Home Control: Absolute Encoder
- DEC Home Control: Optical Homing Sensor
- PC Connection: USB Type-C
- Time / Location: GPS on Advanced Hand Controller
- Power Input: 12–25V, 5.5 × 2.5 mm DC, 5A (motion only)
- Wireless Connectivity: Wi-Fi (AP / Station Modes) / BLE on Advanced Hand Controller
- Advanced Hand Controller: 2-inch OLED Touch Display, Hall-Effect Joystick, GPS, Wireless, BLE
WD-20E Structural Diagram
- 1x WD-20E Mount Head
- 1x Advanced Hand Controller(2026 version, Color OLED Touch Display)
- 1x USB Type-C to A Data Cable (PC connection)
- 1x USB Type-C to C 1m Cable * 1 (Hand controller connection)
- 1x PD Type-C to DC 5.5*2.5mm 12V 5A 1m cable
- 1x Tracking Accuracy Report
- 1x Aluminum Case with EVA Foam
- 1x 3mm Hex wrench
- Dual-encoder servo direct-drive system with true RA axis feedback
- Ultra-low periodic error of ±3 arcseconds
- 44 lbs payload capacity, or 66 lbs with counterweights
- Lightweight 12.5 lbs (5.7 kgs) mount head for portable imaging
- Built-in GPS, Wi-Fi, Bluetooth, and USB Type-C connectivity
- Included color OLED touchscreen hand controller provides direct access to GoTo, tracking, GPS, power monitoring, safety limits, wireless settings, and night-vision controls
WarpAstron WARPDRIVE WD-20E Harmonic Equatorial / AltAz Mount
The WD-20E expands the WARPDRIVE EC Series with a precision-focused drive system built for responsive, consistent tracking. Its proven belt-free Servo Direct Drive architecture pairs with high-resolution absolute feedback at the final RA output axis, allowing the servo motor to drive the strain-wave reducer directly while the encoder measures the true movement of the telescope-carrying axis. This combination delivers direct response, accurate position feedback, and individually verified performance. The WD-20E also includes the new Advanced Hand Controller, featuring a 2-inch OLED touch display, precise Hall-effect joystick, built-in GPS, and wireless connectivity for faster, more intuitive control at the mount. Any telescopes, tripods, cameras or other accessories images are not included with this mount head purchase.
WARPDRIVE WD-20E Standout Features
Extended Guiding Exposure
Lower periodic error gives your guiding system a cleaner signal, so you can safely extend exposure time from 1s to 3s or more.
Less Affected by Conditions
Longer guiding exposures help average out short-term atmospheric seeing fluctuations, preventing the mount from making unnecessary corrections and producing smoother, more consistent tracking.
Adventure Ready
Weighing just 12.5 lb (5.7 kg), the compact WD-20E mount head is easy to transport and set up, making it ideal for backyard imaging or trips to remote dark-sky locations
Complete Wireless Control at Your Fingertips
Manage your mount directly from the controller’s built-in dashboard, with real-time access to coordinates, mount status, slew rate, tracking, pier side, and more. Choose from seven slew speeds, access Home, Reset, Park, Unpark, and solar, lunar, or sidereal tracking modes, or quickly locate Solar System, Messier, NGC, IC, and named objects through the GoTo menu. Built-in GPS supports automatic location and time-zone syncing, while Wi-Fi access-point and Bluetooth settings provide flexible wireless connectivity. You can also monitor input voltage, total load, and power telemetry, configure movement limits and motor-current thresholds, and activate a dimmable red night-vision interface for comfortable use in the dark.
True Axis Feedback with Ultra-Low Periodic Error
An absolute encoder positioned directly on the RA axis output measures the axis’s true position and corrects errors across the entire drive system—not just the strain wave gear. This closed-loop feedback reduces residual periodic error from a typical strain wave gear rating of under ±15 arcseconds to less than ±3 arcseconds, delivering smoother tracking and greater imaging accuracy.
Dual-Encoder Servo Direct Drive
The dual-encoder servo direct-drive system combines a responsive, high-torque servo motor with a near-zero-backlash strain wave gear. An input encoder provides instant corrections, while an output absolute encoder measures the axis’s actual position instead of estimating it from the motor. With no belts or elastic drive components, the system maintains consistent accuracy across changing temperatures and extended use while delivering ultra-low periodic error. Each unit also includes an axis-specific periodic error report for verified performance.
Payload Capacity Built Around Your Setup
The WD-20E supports up to 50 N·m of recommended payload torque without a counterweight, with a maximum limit of 60 N·m. Actual weight capacity depends on how far the payload’s center of gravity sits from the RA axis: compact, closely balanced setups can carry more weight, while longer imaging trains require a lighter payload for optimal tracking performance.
Specifications
- Mount Type: Equatorial / Altazimuth
- RA Reduction Gear: 20 Strain Wave Reducer
- DEC Reduction Gear: 17 Strain Wave Reducer
- RA Drive: Dual Encoder Servo Direct-Drive
- DEC Drive: Servo Direct-Drive
- Output Encoder: High-Resolution Absolute Encoder at RA Axis Output
- Motor Type: BLDC Servo Motor
- Mount Head Weight: 5.7 kg (12.5 lb)
- Standard Load Capacity: 22 kg (44 lb) / 50 Nm
- Maximum Load Capacity: 30 kg (66 lb) with Counterweights / 60 Nm Maximum
- Materials: AL6061 Aluminum, Stainless Steel, Brass
- Brake: RA Axis, 45 Nm
- Dovetail Saddle: Vixen & Losmandy
- Counterweight Shaft: M12, 1.75 mm (0.069 in) Pitch
- Maximum Slew Rate: 10°/sec
- Altitude Adjustment Range: 0°–90°
- Altitude Coarse Adjustment: 3 Positions
- Altitude Fine Adjustment: 30°
- Azimuth Adjustment Range: ±8°
- Operating Temperature: -25°C to 45°C (-13°F to 113°F)
- Periodic Error: ±3 Arcseconds, Encoder Corrected
Controller Specifications
- Control System: OnStepX
- Saddle Power: None
- Hardware Safety Limits: EC Hour-Angle Limit (based on RA absolute encoder) and AEB (Automatic Emergency Brake & Reverse)
- Software Safety Limits: Overhead, Horizon, and Meridian Limits
- Communication Protocols: ASCOM / INDI / LX200 / INDIGO
- RA Home Control: Absolute Encoder
- DEC Home Control: Optical Homing Sensor
- PC Connection: USB Type-C
- Time / Location: GPS on Advanced Hand Controller
- Power Input: 12–25V, 5.5 × 2.5 mm DC, 5A (motion only)
- Wireless Connectivity: Wi-Fi (AP / Station Modes) / BLE on Advanced Hand Controller
- Advanced Hand Controller: 2-inch OLED Touch Display, Hall-Effect Joystick, GPS, Wireless, BLE
WD-20E Structural Diagram
Other Information
- Country of Manufacture: China
- 1x WD-20E Mount Head
- 1x Advanced Hand Controller(2026 version, Color OLED Touch Display)
- 1x USB Type-C to A Data Cable (PC connection)
- 1x USB Type-C to C 1m Cable * 1 (Hand controller connection)
- 1x PD Type-C to DC 5.5*2.5mm 12V 5A 1m cable
- 1x Tracking Accuracy Report
- 1x Aluminum Case with EVA Foam
- 1x 3mm Hex wrench