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NYX-101 Monture Harmonic - PEGASUS

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New Harmonic Mount from PEGASUS

Nyx, the ancient Greek goddess of the night, enlightened us to design and produce a high-performing, high payload mount that can easily carry imaging equipment up to 20 Kg without needing a counterweight or shaft.
Strain wave (harmonic) drive on RA and DEC movement ensures a backlash-free operation with high torque at high payloads.

A fully CNC machined aluminum alloy 6061 body, black and blue anodized, and a selection of branded parts (stepper motors, strain wave gear) inside the mount, ensure that Nyx-101 will perform flawlessly for many years.

Mount includes an electronic brake on the RA axis to prevent backsliding when power is off as well as safety limit stops during slew or tracking.

High precision strain wave gears

Harmonic Gears on Both Axis ensure high payload and a smooth, backlash-free operation.
A hybrid combination of a stepper motor & belt system along with sophisticated electronics can drive RA axis down to 0.10 acsecs of resolution

Reduction on RA axis is 500:1 and 300:1 on DEC axis.

Supporting high imaging loads

Counterweights are not required for weights up to 20Kg.

(counterweights can be installed for higher photographic loads – compatibility with M12 shaft)

Lightweight Design

Lightweight Design, compared to the payload of weight the mount can lift
CNC machined aluminum alloy AL6061 used for aircraft makes the mount an excellent choice for your setup.
Mount weights 6.4 Kg
From a small refractor to a fully loaded SCT 11-inch telescope, NYX-101 can easily handle the payload

Equatorial or Altazimuth Mode

Mount can be used as a German Equatorial mount or as an ALT/AZ, more suitable for visual observations

The mode can be switched from our PC or Mobile Application

Built-in Wireless & USB Control

NYX-101 support wireless and USB 2 connectivity out of the box.
Both technologies can work simultaneously.

Mount is compatible with LX200 protocol and Sky Safari for mobile interaction

Power Off Brake

A safety power-off brake is Installed on the RA Axis and provides an instant safe stop
during a planned or unplanned power interruption.

Additional Key Features

  • DC 12 Volts Battery Operation

NYX-101 requires 12V only for its smooth operation. This means that you can use your normal 12V battery without any additional converters. Mount consumes less than 0.6Amp during tracking and up to 2.5 Amps during slewing.

  • Secure power and USB

The power cable is a GX12 type with can securely lock onto the mount. USB type B special socket ensures a secure grip. Both of these sockets are placed on the non-movable part of the mount. No cables moving during slews and tracking. A second GX12 socket allows you to provide power to your imaging equipment.

  • Refraction Corrections

NYX-101 integrates a barometric sensor required to calculate atmospheric, refraction corrections during mount tracking. For smaller focal lengths this is might be overkill but if you have an SCT you will notice a welcome change in your guiding performance.


  • Universal Saddle Plate

NYX-101 includes a low profile and rigid universal Saddle that accepts Vixen and Losmandy 3-ich dovetails.

  • Integrated ST-4 Autoguiding Port

An ST-4 port is available at the back of the mount. Port is compatible with a simple hand controller or with an ST-4 guiding camera.

  • Polemaster Adapter

In the front of the mount, there is a place for the QHY Polemaster (adapter included), which allows you to perform a precise polar alignment, required for your imaging sessions.

  • Electronic assistant for initial polar alignment

A set of sensors allows you to orient the mount at the correct altitude and azimuth in order to have an initial, rough, polar alignment (for lower focal lengths such as camera lenses or visual observations ). Our mobile application guides you through that process.

  • Reverse Voltage Polarity Protection

NYX-101 has been designed with reverse voltage polarity protection. A saver if you accidentally reverse voltage or battery polarity during the night.

  • Optional Counterweight support

Mount does not require counterweights for payload up to 20Kg. However, if you would like to install counterweights for higher payloads there is a compatible M12 threaded shaft hole at the end of the DEC axis.

  • ASCOM, INDI, Sky Safari Support

The mount fully supports ASCOM6 and INDI framework. Sky-Safari is also supported allowing you to control the mount through your mobile device.

  • LX200 Compatibility

LX200 protocol is fully compatible with NYX-101. Sky-Safari works out of the box with the mount.

  • Mobile Control

A mobile application for IOS and Android platforms allows you to control both axis of the mount, slew to installed catalogs of thousands of night sky targets and do a rough polar alignment through an electronic polar assistant.

  • Safety limits on RA axis

Safety limit encoders on RA Axis prevent internal cable snag or collision with the tripod.

  • Firmware Upgrade

An easy firmware upgrade process allows you to stay up to date with bug fixes and the latest features of the mount.

Pegasus Carbon Fiber Tripod

  •     Tripod with Carry Bag
  •     Carbon Tripod Adapter
  •     Metallic Pins
  •     Pegasus Astro Carbon Tripod TRPD101

This is the Pegasus Carbon Fiber Tripod for NYX-101 Harmonic Drive Mount (PEG-TRPD101).
The tripod legs are rigid and lightweight, made from carbon fiber. We strongly suggest using this tripod with imaging equipment for up to 15Kg.

  •     Length Retracted: 65 cm
  •     Max length: 120 cm
  •     Weight: 2000 gr
  •     Max Load Capacity: 50kg
  •     Angle of Legs: 35° Fixed

A pier extension (+18 cm / 7” is available). The pier can be easily constructed by purchasing the three (3) following parts:

  1. EQ6 / Universal adapter
  2. Aluminium Standoffs – 3 pcs
  3. Carbon Tripod Adapter
    (comes along with our Carbon Tripod)

Note 1: If you do not own the carbon tripod then the EQ6 / Universal Tripod Adapter can be doubled to assemble the half-pier extension.

Note 2: Three (3) additional standoffs can be purchased to increase pier stability

(Half Pier accepts up to 6 standoffs).

Technical Specification

  • Material: CNC machined 6061  aircraft aluminum alloy
  • Mount Mode :  Equatorial or Altazimuth
  • Mount Drive: Strain Wave (Harmonic) Gear and Belt resulting reduction 500:1 (RA) and 300:1 (DEC)
  • Load Capacity: 20 Kg without counterweights
  • 30 Kg with counterweights
  • Weight: 6.5 Kg
  • Safety / Power Off Brake: On RA Axis
  • Dovetail: Vixen and Losmandy 3-inch
  • RA Motor Resolution: 0.10”
  • Max Slew: 6 degs/sec
  • Power Voltage: 12V DC unregulated
  • 0.7A during tracking, 2Amps during slewing
  • Guide Port:  ST4
  • Counterweight Shaft: M12 Shaft
  • Communication: Wireless 802.11g and USB2
  • Operating Temperature: -20° to + 50°C
  • Warranty: 3 years
  • Made in (designed, assembled and tested): Greece. We carefully curate the entire manufacturing, testing and packing process.

Product Details

Data sheet

Poids (Kg)
Charge maximale (kg)

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NYX-101 Monture Harmonic - PEGASUS

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