Guide Price $199
Power & Data Hubs Advanced 3
Full-featured observatory power and data hub
The Gemini Power & Data Hubs Advanced 3 is a fully upgraded version of the Gemini PowerBox & Hub Plus V3. While fully inheriting all the interface advantages of the previous generation, it upgrades the ambient temperature and humidity sensing system to the industrial grade high precision AHT20 series and adds an exclusive lens surface temperature collection interface, delivering a professional integrated power supply and data management solution for astronomical observation equipment.
Key Features
10 Amps Total Distributed Current
Up to 10A of total distributed current across all channels — enough for the most demanding astrophotography rigs.
4×12V Switchable DC Outputs
Four individually software-controlled 12V DC outputs. Toggle each channel on/off remotely via ASCOM, NINA, or web dashboard.
2×PWM Dew Heater Channels
Two dedicated dew heater outputs with 0–100% adjustable PWM power. Switchable to normal DC switches when dew control is not needed.
Always-ON Output with Ideal Diode
One always-on output with built-in ideal diode for anti-current backflow protection — perfect for critical devices that must never lose power.
Built-in High-Performance USB Hub
4×USB 2.0 High-Speed ports and 2×USB 3.2 SuperSpeed ports. Backward compatible with all USB device speeds for cameras, guide cameras, and peripherals.
AHT20 Temperature & Humidity Sensor
Industrial-grade AHT20 sensor (included) for precise ambient temperature and humidity monitoring with ±0.5°C accuracy.
DS18B20 Lens Temperature Sensor
Dedicated DS18B20 lens surface temperature sensor (included) for accurate dew point calculation right at the optics.
Intelligent PID Dew Control
Fully automatic PWM defogging powered by PID algorithm — no manual intervention needed. Set your target temperature and let the controller handle the rest.
Multiple Safety Protections
Reverse connection, overvoltage, and electrostatic protection on all channels. Your gear stays safe even in worst-case electrical scenarios.
ASCOM & NINA Compatible
Full ASCOM driver support with customizable interface names. Seamless NINA remote control integration. Offline operation available — no network required.
CNC Aluminum Alloy Body
Precision-machined CNC aluminum enclosure with anodized finish — durable, heat-dissipating, and built to last in field conditions.
Firmware Upgradeable
Firmware upgradeable over USB for continuous optimization and new feature rollouts. Always stay up to date with the latest improvements.
Built-in High-Speed USB3 Hub (2*USB3.2 + 4*USB2.0)
Equipped with an industrial-grade high-performance USB3.0 main control chip, it provides 2 USB3.2 super-speed interfaces and 4 USB2.0 high-speed interfaces. The USB3.2 super-speed hub and USB2.0 controller operate independently in parallel, ensuring that 5Gbps super-speed data transmission is not affected by low-speed USB2.0 devices, thus meeting the needs of synchronous data transmission for multiple devices during astronomical observation. A USB 3.2 Hub controller guarantees seamless functionality across a wide temperature range, spanning from -40°C to +80°C, while individual ON/OFF control for each USB port via software manipulation offers convenience in case of unresponsive devices, especially in inclement conditions like cold nights—simply identify the problematic port and initiate a recycling process through the software interface.
Strong USB Port Power Supply Capacity
Built-in high-performance Synchronous Buck switching regulator that stably outputs 5V/8A continuous current, providing sufficient and stable power supply support for 6 USB interfaces. This eliminates issues such as voltage drop and restart when multiple devices are connected simultaneously, ensuring the efficient operation of various USB interface devices.
Complete DC interface and Advanced Protection System
10 Ampere Total Output Current
The total output current can reach 10 amperes. Regular astrophotography equipment only requires 5-8 amperes of current for efficient operation, allowing the device to easily support the simultaneous operation of an entire set of astronomical observation equipment and handle various complex observation scenarios with ease.
Built-in High-Precision Voltage/Current/Power Measurement System
A high-precision acquisition chip is installed at the rear of the DC input terminal, which can real-time and accurately monitor the total input voltage, total DC output current, and instantaneous power consumption, making the power consumption status clear at a glance.
Multiple Safety Protections to Guard Equipment Safety
Built-in power reverse connection protection effectively avoids the risk of misoperation caused by reverse connection of the main power supply, prevents equipment damage due to wiring errors, and ensures the smooth progress of night astronomical observation. Additionally, it integrates multiple mechanisms such as overvoltage protection, overcurrent protection, and electrostatic protection to fully protect equipment and observation safety.
4 Channels of Independently Controllable 12V DC Power Output Ports
Adopting intelligent high-side power switches that comply with the AEC-Q100 Grade 1 standard, it provides stable and reliable power supply for various astronomical equipment. The four 12V outputs are individual switchable and can be turned on and off independently, and each channel is equipped with overcurrent protection, undervoltage shutdown, absolute overtemperature protection, and dynamic overtemperature protection mechanisms. In case of failure, intelligent controlled restart can be achieved, eliminating the impact of power supply abnormalities on equipment from the source.
2 Channels of Adjustable Power PWM Output
Equipped with 2 Pulse Width Modulation (PWM) output ports, specifically designed for high-demand astronomical equipment defogging heating strips. It supports remote computer-based power adjustment via NINA software to accurately match defogging needs in different environments.
Intelligent Adaptive Adjustment of PWM Defogging Output
Equipped with a PID intelligent defogging algorithm, it autonomously adjusts the power of the defogging heater based on dew point data collected by the AHT20 ambient sensor and lens surface temperature captured by the DS18B20 temperature probe.
Package List
Gemini Power & Data Hubs Advanced 3 Power Controller ×1
AHT20 Temperature and Humidity Sensor ×1
DS18B20 Temperature Sensor ×1
DC2.1mm (male-to-male) Power Cable ×2 (1 piece of 1m, 1 piece of 0.5m)
RCA (female) to DC2.1mm (male) Power Cable ×2
USB3.0 Type-B Data Cable ×1 (1m)
Custom Storage Box ×1
Aluminum Alloy Heightening Dovetail Plate ×1
Stainless Steel M4 Screws ×2
Interface Name Can Be Customized in ASCOM
Compatible with ASCOM drivers and supports NINA remote control; interface names can be customized in ASCOM settings to suit personal operating habits.
Technical Parameters
| Total Output Current | 10A |
| DC Outputs | 4×12V, individually switchable (software-controlled) |
| PWM Dew Heater Outputs | 2× (0–100% adjustable, switchable to normal DC) |
| Always-ON Output | 1× (with built-in ideal diode, anti-current backflow) |
| USB Ports | 2×USB 3.2 SuperSpeed (5Gbps) + 4×USB 2.0 High-Speed |
| USB Power Supply | 5V / 8A (Synchronous Buck regulator) |
| Input Voltage | 12V DC |
| Temperature/Humidity Sensor | AHT20 (industrial grade, ±0.5°C, ±3% RH) |
| Lens Temperature Sensor | DS18B20 (probe type) |
| Dew Control Algorithm | PID intelligent adaptive, fully automatic |
| Protection | Reverse connection, overvoltage, overcurrent, electrostatic |
| Body Material | CNC aluminum alloy, anodized finish |
| Connectivity | USB-C / WiFi 2.4GHz |
| Compatibility | ASCOM, NINA (customizable interface names) |
| Firmware | Upgradeable via USB |
| USB Hub Operating Temperature | -40°C to +80°C |
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