Second square in the 2025 Advent calendar - Saddle Powerbox

Pegasus Astro - Saddle Powerbox

Visit Pegasus Astro Saddle Powerbox is a versatile accessory designed to make any astronomy or astrophotography set-up simpler and more reliable.
It combines a mounting saddle (Losmandy & Vixen) and a intelligent power station, This allows you to power cameras, mounts, heaters, accessories and computers, while drastically reducing cable clutter.

Thanks to its USB ports, numerous 12V outputs, integrated sensors and comprehensive control software, the Saddle Powerbox secures your setup, avoids blackouts and guarantees optimum management of your observation nights.

In stock

Key features

• Up to 4 + 2 12V DC outputs (6 in total by converting the resistor ports to fixed 12V).
• 10A (120W) of total current available.
• Integrated USB3 hub : 2× USB3.1 + 2× USB2.
• High-power USB: up to 3A (Raspberry Pi 3/4 power supply compatible).
• Integrated sensors : temperature & humidity.
• 2 PWM channels for heating elements (including DC→RCA adapters).
• Function Auto-Dew automatic resistor adjustment.
• Measurement of voltage, current and power.
• Reverse polarity protection.
• Use PC / USB or standalone (without computer).
• Mounting Losmandy & Vixen integrated.
• Pucks available for AM5, EQ6, RST, HEQ5, CEM26, GEM28, Star Adventurer GTi, Avalon, AZ-EQ6 mounts.

6 12V power supply outputs

The Powerbox features 4 standard 12V outputs and 2 PWM outputs for heating resistors (convertible to fixed 12V outputs). Internal MOSFETs provide a stable, reliable power supply. The 4 main outputs switch on and off together, while the two PWM outputs can be controlled individually.

Integrated sensors

The Saddle Powerbox continuously measures temperature and thehumidity for optimal monitoring of ambient conditions and automatic mist control.
It also displays the input voltage and the current drawn.

Heating resistors (2 ports)

Two PWM outputs provide precise control of your heating elements, with a capacity of 5A per output.
The function Auto-Dew automatically adjusts power output according to dew point.
Two adapters DC 2.1 → RCA are included.

Power consumption monitoring

An internal ammeter measures the total consumption of your setup. You can monitor voltage and current in real time to avoid overloads.

Over 10A of available current

Designed for demanding setups, the Powerbox can supply up to 10A in total.
A typical photo installation consumes between 5 and 7A.

Integrated USB3 hub

• 2 × USB3 SuperSpeed 5 Gbps
• 2 × USB2 High-Speed
• USB ports delivering up to 3A (5V device power supply)
• Independent MTT controller to prevent slowdowns of USB2 peripherals

USB port configuration

• USB1 : USB2 & USB3
• USB2 : USB2 & USB3
• USB3 : USB2
• USB4 : USB2

Optional Pucks for frames

• AM5 / AM3 PEG-PUCK-AM5
• EQ6 / NEQ6 / EQ6-R : PEG-PUCK-EQ6R
• RST-135 / RST-300 PEG-PUCK-RST
• HEQ5 : PEG-PUCK-HEQ5
• CEM26 / GEM28 PEG-PUCK-iCEM26GEM28
• Star Adventurer GTi PEG-PUCK-SAGTi
• Avalon M-UNO / LINEAR : PEG-PUCK-UNO
• AZ-EQ6 PEG-PUCK-EQ6AZ

Advanced features

• Standalone Stand-alone operation, automatic recovery of settings.
• 2 PWM outputs controllable via software.
• Auto-Dew Automatic dew point control.
• Status LED can be disabled via software.
• Reverse polarity protection.
• Watchdog hardware with automatic reset in the event of a freeze.
• Upgradeable firmware.
• Fastener support Losmandy 3″ and Vixen.

Software compatibility

• ASCOM 6.5 : ObservingConditions & Switches
• INDI full compatibility (Stellarmate, etc.)
• Unity Platform unified Pegasus Astro software + REST/JSON API

Box contents

• 1 × Saddle Powerbox
• 2 × DC 2.1 → RCA adapters (15 cm)
• 4 × DC cables 2.1 → 2.1 (2×0.5 m + 2×1 m)
• 1 × USB3 Type-B cable (1.8 m)

Technical specifications

• Dovetail formats : Losmandy & Vixen
• Power supply : 12-14V DC
• Connections DC 5.5×2.1mm (positive center)
• USB hub USB3 Type-B
• 4 12V outputs max 10A total
• 2 PWM outputs : 4A each
• Sensors humidity 0-100%, temperature -40 to +80°C
• Voltmeter 5-15V measurement
• Maximum load weight : 40 kg