ToupTek Astro ATLAS Series SH20 Strain Wave Equatorial Mount
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Contiguous US / Lower 48:
Free shipping applies to orders over $50 using our chosen carrier/method. Faster paid options are available at checkout.
Alaska, Hawaii & US Territories:
Free shipping applies to many—but not all—products. Enter your ZIP code in cart or upon checkout to confirm options and costs.
International:
International orders do not qualify for free shipping. Shipping, duties, brokerage, tariffs, and taxes are the customer’s responsibility. Some items may be restricted due to export, size, or manufacturer limitations.
- 18-bit encoder, ≤20″ PE, and responsive guiding
- 5.1 kg (11.2 lb) body with up to 30 kg (66 lb) payload with counterweights
- Collision protection, Park lock, Audible alerts, and other intelligent mount protections
- CNC-machined aluminum combines durability with a lightweight design
- Features a 12V DC power input and a 12V 5A output to reduce cable clutter
- One-click EQ / Alt-Az switching without restarting
- Compatible with major software like ASCOM, INDI, and StellaVita
- Native apps for PC, Android, and iOS. Connect through Bluetooth, Wi-Fi, or USB-C
ToupTek Astro ATLAS Series SH20 Harmonic Drive Mount
Built for astrophotographers who want high payload capacity without the bulk of a traditional equatorial mount, the ToupTek SH20 combines precision tracking with portable performance. Its BLDC servo motor, harmonic reducer, and 18-bit high-precision encoder provide smooth motion and responsive guiding, with a peak-to-peak periodic error of ≤20″. Each mount also includes an individual PE test report.
Weighing just 11.2 lb (5.1 kg), the SH20 supports up to 44 lb (20 kg) without counterweights or 66 lb (30 kg) with optional counterweights. One-click switching between EQ / Alt-Az modes makes it adaptable for deep-sky imaging, visual observation, EAA, sky surveys, and Solar System imaging. ToupTek’s self-developed control system supports PC, Android, and iOS, along with ASCOM, INDI, and INDIGO. Wi-Fi, Bluetooth, and USB-C connectivity also provide integration with NINA, SharpCap, KStars, MaxIm DL, and StellaVita.
Intelligent Mount Protection
Audible Alerts
Command-response beeps with three volume levels provide convenient feedback during operation.
Collision Monitoring
Monitors both axes and triggers a slight reverse movement followed by axis locking when a collision event is detected.
Park Lock
Once the ATLAS mount is parked, movement commands are disabled, providing added security when installing or removing equiptment.
Precision Servo Harmonic Drive
The BLDC servo motor, harmonic reducer, and 18-bit encoder work together to provide smooth, precise movement with near-zero backlash. Responsive guiding quickly corrects small tracking errors, helping keep stars sharp during long exposures. The SH20 has a peak-to-peak periodic error of ≤20″, and each mount includes an individual PE test report to verify its tracking performance.
Single Click to Unlock Both Tracking Modes
Switch between Equatorial (EQ) and Alt-Azimuth (Alt-Az) modes with a single click in the control interface—no need to restart the mount. Use EQ mode for precise deep-sky tracking, or switch to Alt-Az for visual observing, EAA, sky surveys, and Solar System imaging.
Reliable Operation
Engineered for safe and reliable operation, the ATLAS SH20 features an automatic RA-axis mechanical brake that engages during power loss to prevent uncontrolled telescope movement. Dual-axis home sensors, encoders, and FRAM memory enable accurate position recovery and home calibration. Adjustable altitude and meridian limits help prevent equipment collisions, while built-in overcurrent and overvoltage protection safeguard the mount against electrical issues.
Precision-Built Aluminum Design for Lasting Durability
Crafted from high-strength, CNC-machined aluminum, the mount combines durability with a lightweight, refined design. Its fine matte anodized silver-gray finish resists everyday wear and fingerprints, while oversized, glove-friendly adjustment knobs provide a comfortable grip for precise adjustments. Built to perform in temperatures from -20°C to +40°C, it delivers reliable operation in demanding observing conditions. For low-temperature use, Heavy Payload Mode is recommended.
Versatile Connections & User-Friendly Design
Designed for convenient setup and operation, the mount features a 12V DC power input and a 12V 5A output for powering compatible accessories while reducing cable clutter. Its dual Vixen- and Losmandy-style dovetail saddle accommodates a wide range of telescopes, while the M12 counterweight interface supports balanced setups. Dual-scale latitude adjustment covers 0°–90° for worldwide use, and dedicated Bluetooth and three-color status indicators keep you informed of operating conditions. Built-in magnetic hex key storage keeps essential tools within easy reach for quick adjustments.
Lightweight Design, High Payload Capacity
Weighing just 11.2 lb (5.1 kg), the SH20 supports up to 44 lb (20 kg) without counterweights or 66 lb (30 kg) with optional counterweights, measured with the payload’s center of gravity 20 cm from the mount. Its dual Vixen/Losmandy saddle accommodates a wide range of telescope and imaging setups.
ToupTek Self-Developed Control System
Built around a custom in-house control system, the ATLAS SH20 offers flexible connectivity and seamless integration with popular astronomy software. Compatible with ASCOM, INDI, and StellaVita, the mount supports native applications for PC, Android, and iOS. Connect through Bluetooth, 2.4 GHz Wi-Fi, or USB-C for convenient control across different setups. The dedicated hand controller features an 8-direction joystick, programmable buttons, a LOCK switch, and a built-in Wi-Fi hotspot for easy hands-on operation.
ATLAS Mount Breakdown
-
Mount Type: Strain-wave equatorial mount
-
Operating Modes: Equatorial (EQ) / Altazimuth (AZ)
-
Drive Train: BLDC motor with direct strain-wave drive (100:1 reduction ratio)
-
RA Drive: BLDC motor with size-20 strain-wave drive (100:1) and brake
-
DEC Drive: BLDC motor with size-17 strain-wave drive (100:1)
-
Motor Encoder Resolution: 18-bit
-
Periodic Error (PE): ±15 arcseconds
-
Periodic Error Period: 432 seconds
-
Maximum Slew Rate: 6°/sec
-
Software Slew Rates: 0.25x, 0.5x, 1x, 2x, 4x, 8x, 20x, 60x, 720x, 1440x
-
Hand Controller Slew Presets: 10x / 720x
-
Payload Capacity: 20 kg (44.1 lb) without counterweights; up to 30 kg (66.1 lb) with counterweights (at 20 cm)
-
Mount Head Weight: 5.1 kg (11.2 lb)
-
Latitude Adjustment Range: 0°–90° (dual-scale: 0°–60° / 30°–90°)
-
Azimuth Adjustment Range: ±6°
-
Dovetail Saddle: Dual Losmandy D-style / Vixen V-style (wide and narrow)
-
Counterweight Shaft Thread: M12 x 1.75 mm
-
Power Input: 12V DC, 5.5 x 2.1 mm center-positive barrel jack (3–7A power supply; 5A recommended; 5A maximum mount input)
-
Power Output: 12V DC, 5A maximum (always on)
-
Software Compatibility: ASCOM, INDI, native StellaVita
-
Communication: USB, Wi-Fi, Bluetooth
-
Firmware Updates: SH via PC (USB/Wi-Fi) or mobile app (Wi-Fi); MHC via Wi-Fi only
-
Home Position: Sensor-referenced mechanical zero (RA and DEC home sensors)
-
Power-Off Brake: RA axis
-
Park Function: Supported
-
Operating Temperature: -20°C to +40°C (-4°F to +104°F)
-
Safety Features: Software limits, stall detection, overcurrent protection
Other Information
- Country of Manufacture: China
ToupTek Astro ATLAS Series SH20 Harmonic Drive Mount
Built for astrophotographers who want high payload capacity without the bulk of a traditional equatorial mount, the ToupTek SH20 combines precision tracking with portable performance. Its BLDC servo motor, harmonic reducer, and 18-bit high-precision encoder provide smooth motion and responsive guiding, with a peak-to-peak periodic error of ≤20″. Each mount also includes an individual PE test report.
Weighing just 11.2 lb (5.1 kg), the SH20 supports up to 44 lb (20 kg) without counterweights or 66 lb (30 kg) with optional counterweights. One-click switching between EQ / Alt-Az modes makes it adaptable for deep-sky imaging, visual observation, EAA, sky surveys, and Solar System imaging. ToupTek’s self-developed control system supports PC, Android, and iOS, along with ASCOM, INDI, and INDIGO. Wi-Fi, Bluetooth, and USB-C connectivity also provide integration with NINA, SharpCap, KStars, MaxIm DL, and StellaVita.
Intelligent Mount Protection
Audible Alerts
Command-response beeps with three volume levels provide convenient feedback during operation.
Collision Monitoring
Monitors both axes and triggers a slight reverse movement followed by axis locking when a collision event is detected.
Park Lock
Once the ATLAS mount is parked, movement commands are disabled, providing added security when installing or removing equiptment.
Precision Servo Harmonic Drive
The BLDC servo motor, harmonic reducer, and 18-bit encoder work together to provide smooth, precise movement with near-zero backlash. Responsive guiding quickly corrects small tracking errors, helping keep stars sharp during long exposures. The SH20 has a peak-to-peak periodic error of ≤20″, and each mount includes an individual PE test report to verify its tracking performance.
Single Click to Unlock Both Tracking Modes
Switch between Equatorial (EQ) and Alt-Azimuth (Alt-Az) modes with a single click in the control interface—no need to restart the mount. Use EQ mode for precise deep-sky tracking, or switch to Alt-Az for visual observing, EAA, sky surveys, and Solar System imaging.
Reliable Operation
Engineered for safe and reliable operation, the ATLAS SH20 features an automatic RA-axis mechanical brake that engages during power loss to prevent uncontrolled telescope movement. Dual-axis home sensors, encoders, and FRAM memory enable accurate position recovery and home calibration. Adjustable altitude and meridian limits help prevent equipment collisions, while built-in overcurrent and overvoltage protection safeguard the mount against electrical issues.
Precision-Built Aluminum Design for Lasting Durability
Crafted from high-strength, CNC-machined aluminum, the mount combines durability with a lightweight, refined design. Its fine matte anodized silver-gray finish resists everyday wear and fingerprints, while oversized, glove-friendly adjustment knobs provide a comfortable grip for precise adjustments. Built to perform in temperatures from -20°C to +40°C, it delivers reliable operation in demanding observing conditions. For low-temperature use, Heavy Payload Mode is recommended.
Versatile Connections & User-Friendly Design
Designed for convenient setup and operation, the mount features a 12V DC power input and a 12V 5A output for powering compatible accessories while reducing cable clutter. Its dual Vixen- and Losmandy-style dovetail saddle accommodates a wide range of telescopes, while the M12 counterweight interface supports balanced setups. Dual-scale latitude adjustment covers 0°–90° for worldwide use, and dedicated Bluetooth and three-color status indicators keep you informed of operating conditions. Built-in magnetic hex key storage keeps essential tools within easy reach for quick adjustments.
Lightweight Design, High Payload Capacity
Weighing just 11.2 lb (5.1 kg), the SH20 supports up to 44 lb (20 kg) without counterweights or 66 lb (30 kg) with optional counterweights, measured with the payload’s center of gravity 20 cm from the mount. Its dual Vixen/Losmandy saddle accommodates a wide range of telescope and imaging setups.
ToupTek Self-Developed Control System
Built around a custom in-house control system, the ATLAS SH20 offers flexible connectivity and seamless integration with popular astronomy software. Compatible with ASCOM, INDI, and StellaVita, the mount supports native applications for PC, Android, and iOS. Connect through Bluetooth, 2.4 GHz Wi-Fi, or USB-C for convenient control across different setups. The dedicated hand controller features an 8-direction joystick, programmable buttons, a LOCK switch, and a built-in Wi-Fi hotspot for easy hands-on operation.
ATLAS Mount Breakdown
-
Mount Type: Strain-wave equatorial mount
-
Operating Modes: Equatorial (EQ) / Altazimuth (AZ)
-
Drive Train: BLDC motor with direct strain-wave drive (100:1 reduction ratio)
-
RA Drive: BLDC motor with size-20 strain-wave drive (100:1) and brake
-
DEC Drive: BLDC motor with size-17 strain-wave drive (100:1)
-
Motor Encoder Resolution: 18-bit
-
Periodic Error (PE): ±15 arcseconds
-
Periodic Error Period: 432 seconds
-
Maximum Slew Rate: 6°/sec
-
Software Slew Rates: 0.25x, 0.5x, 1x, 2x, 4x, 8x, 20x, 60x, 720x, 1440x
-
Hand Controller Slew Presets: 10x / 720x
-
Payload Capacity: 20 kg (44.1 lb) without counterweights; up to 30 kg (66.1 lb) with counterweights (at 20 cm)
-
Mount Head Weight: 5.1 kg (11.2 lb)
-
Latitude Adjustment Range: 0°–90° (dual-scale: 0°–60° / 30°–90°)
-
Azimuth Adjustment Range: ±6°
-
Dovetail Saddle: Dual Losmandy D-style / Vixen V-style (wide and narrow)
-
Counterweight Shaft Thread: M12 x 1.75 mm
-
Power Input: 12V DC, 5.5 x 2.1 mm center-positive barrel jack (3–7A power supply; 5A recommended; 5A maximum mount input)
-
Power Output: 12V DC, 5A maximum (always on)
-
Software Compatibility: ASCOM, INDI, native StellaVita
-
Communication: USB, Wi-Fi, Bluetooth
-
Firmware Updates: SH via PC (USB/Wi-Fi) or mobile app (Wi-Fi); MHC via Wi-Fi only
-
Home Position: Sensor-referenced mechanical zero (RA and DEC home sensors)
-
Power-Off Brake: RA axis
-
Park Function: Supported
-
Operating Temperature: -20°C to +40°C (-4°F to +104°F)
-
Safety Features: Software limits, stall detection, overcurrent protection
- 1x ATLAS Mount Head
- 1x Hand Controller
- 1x Coiled HC Cable
- 1x USB Cable
- 2x Hex Key
- 1x PE Test Report
- 1x Quick Start Guide
- 18-bit encoder, ≤20″ PE, and responsive guiding
- 5.1 kg (11.2 lb) body with up to 30 kg (66 lb) payload with counterweights
- Collision protection, Park lock, Audible alerts, and other intelligent mount protections
- CNC-machined aluminum combines durability with a lightweight design
- Features a 12V DC power input and a 12V 5A output to reduce cable clutter
- One-click EQ / Alt-Az switching without restarting
- Compatible with major software like ASCOM, INDI, and StellaVita
- Native apps for PC, Android, and iOS. Connect through Bluetooth, Wi-Fi, or USB-C
ToupTek Astro ATLAS Series SH20 Harmonic Drive Mount
Built for astrophotographers who want high payload capacity without the bulk of a traditional equatorial mount, the ToupTek SH20 combines precision tracking with portable performance. Its BLDC servo motor, harmonic reducer, and 18-bit high-precision encoder provide smooth motion and responsive guiding, with a peak-to-peak periodic error of ≤20″. Each mount also includes an individual PE test report.
Weighing just 11.2 lb (5.1 kg), the SH20 supports up to 44 lb (20 kg) without counterweights or 66 lb (30 kg) with optional counterweights. One-click switching between EQ / Alt-Az modes makes it adaptable for deep-sky imaging, visual observation, EAA, sky surveys, and Solar System imaging. ToupTek’s self-developed control system supports PC, Android, and iOS, along with ASCOM, INDI, and INDIGO. Wi-Fi, Bluetooth, and USB-C connectivity also provide integration with NINA, SharpCap, KStars, MaxIm DL, and StellaVita.
Intelligent Mount Protection
Audible Alerts
Command-response beeps with three volume levels provide convenient feedback during operation.
Collision Monitoring
Monitors both axes and triggers a slight reverse movement followed by axis locking when a collision event is detected.
Park Lock
Once the ATLAS mount is parked, movement commands are disabled, providing added security when installing or removing equiptment.
Precision Servo Harmonic Drive
The BLDC servo motor, harmonic reducer, and 18-bit encoder work together to provide smooth, precise movement with near-zero backlash. Responsive guiding quickly corrects small tracking errors, helping keep stars sharp during long exposures. The SH20 has a peak-to-peak periodic error of ≤20″, and each mount includes an individual PE test report to verify its tracking performance.
Single Click to Unlock Both Tracking Modes
Switch between Equatorial (EQ) and Alt-Azimuth (Alt-Az) modes with a single click in the control interface—no need to restart the mount. Use EQ mode for precise deep-sky tracking, or switch to Alt-Az for visual observing, EAA, sky surveys, and Solar System imaging.
Reliable Operation
Engineered for safe and reliable operation, the ATLAS SH20 features an automatic RA-axis mechanical brake that engages during power loss to prevent uncontrolled telescope movement. Dual-axis home sensors, encoders, and FRAM memory enable accurate position recovery and home calibration. Adjustable altitude and meridian limits help prevent equipment collisions, while built-in overcurrent and overvoltage protection safeguard the mount against electrical issues.
Precision-Built Aluminum Design for Lasting Durability
Crafted from high-strength, CNC-machined aluminum, the mount combines durability with a lightweight, refined design. Its fine matte anodized silver-gray finish resists everyday wear and fingerprints, while oversized, glove-friendly adjustment knobs provide a comfortable grip for precise adjustments. Built to perform in temperatures from -20°C to +40°C, it delivers reliable operation in demanding observing conditions. For low-temperature use, Heavy Payload Mode is recommended.
Versatile Connections & User-Friendly Design
Designed for convenient setup and operation, the mount features a 12V DC power input and a 12V 5A output for powering compatible accessories while reducing cable clutter. Its dual Vixen- and Losmandy-style dovetail saddle accommodates a wide range of telescopes, while the M12 counterweight interface supports balanced setups. Dual-scale latitude adjustment covers 0°–90° for worldwide use, and dedicated Bluetooth and three-color status indicators keep you informed of operating conditions. Built-in magnetic hex key storage keeps essential tools within easy reach for quick adjustments.
Lightweight Design, High Payload Capacity
Weighing just 11.2 lb (5.1 kg), the SH20 supports up to 44 lb (20 kg) without counterweights or 66 lb (30 kg) with optional counterweights, measured with the payload’s center of gravity 20 cm from the mount. Its dual Vixen/Losmandy saddle accommodates a wide range of telescope and imaging setups.
ToupTek Self-Developed Control System
Built around a custom in-house control system, the ATLAS SH20 offers flexible connectivity and seamless integration with popular astronomy software. Compatible with ASCOM, INDI, and StellaVita, the mount supports native applications for PC, Android, and iOS. Connect through Bluetooth, 2.4 GHz Wi-Fi, or USB-C for convenient control across different setups. The dedicated hand controller features an 8-direction joystick, programmable buttons, a LOCK switch, and a built-in Wi-Fi hotspot for easy hands-on operation.
ATLAS Mount Breakdown
-
Mount Type: Strain-wave equatorial mount
-
Operating Modes: Equatorial (EQ) / Altazimuth (AZ)
-
Drive Train: BLDC motor with direct strain-wave drive (100:1 reduction ratio)
-
RA Drive: BLDC motor with size-20 strain-wave drive (100:1) and brake
-
DEC Drive: BLDC motor with size-17 strain-wave drive (100:1)
-
Motor Encoder Resolution: 18-bit
-
Periodic Error (PE): ±15 arcseconds
-
Periodic Error Period: 432 seconds
-
Maximum Slew Rate: 6°/sec
-
Software Slew Rates: 0.25x, 0.5x, 1x, 2x, 4x, 8x, 20x, 60x, 720x, 1440x
-
Hand Controller Slew Presets: 10x / 720x
-
Payload Capacity: 20 kg (44.1 lb) without counterweights; up to 30 kg (66.1 lb) with counterweights (at 20 cm)
-
Mount Head Weight: 5.1 kg (11.2 lb)
-
Latitude Adjustment Range: 0°–90° (dual-scale: 0°–60° / 30°–90°)
-
Azimuth Adjustment Range: ±6°
-
Dovetail Saddle: Dual Losmandy D-style / Vixen V-style (wide and narrow)
-
Counterweight Shaft Thread: M12 x 1.75 mm
-
Power Input: 12V DC, 5.5 x 2.1 mm center-positive barrel jack (3–7A power supply; 5A recommended; 5A maximum mount input)
-
Power Output: 12V DC, 5A maximum (always on)
-
Software Compatibility: ASCOM, INDI, native StellaVita
-
Communication: USB, Wi-Fi, Bluetooth
-
Firmware Updates: SH via PC (USB/Wi-Fi) or mobile app (Wi-Fi); MHC via Wi-Fi only
-
Home Position: Sensor-referenced mechanical zero (RA and DEC home sensors)
-
Power-Off Brake: RA axis
-
Park Function: Supported
-
Operating Temperature: -20°C to +40°C (-4°F to +104°F)
-
Safety Features: Software limits, stall detection, overcurrent protection
Other Information
- Country of Manufacture: China
- 1x ATLAS Mount Head
- 1x Hand Controller
- 1x Coiled HC Cable
- 1x USB Cable
- 2x Hex Key
- 1x PE Test Report
- 1x Quick Start Guide