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The StarGO is a Computerized GoTo Control System based on stepper motor technology. StarGo can manage both Alt-Azimuthal and Equatorial Mounts, even if has been designed mainly for the M-zero, M-uno and Linear mounts thanks to the programmable Gear Ratio and the special motor kit, it may be easily used with other brand mounts.
Price (VAT excl.)1.017,15 €
Italian VAT (22%) incl.1.240,92 €
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Packing Content
Main Board with aluminium case
StarGO control keypad
USB cable
12-24 VDC power supply with 110-240 VAC and 12 VDC inputs + cigarette lighter 12V power cable.
USB flash drive with StarGO softwares and manuals
StarGO carrying bag
RS232 cables connection
Special Shockproof bag
StarGo with third party mounts
StarGo with third party mounts

The StarGO is a GoTo Control System based on stepper motor technology. It has been designed to be intuitive and easy to use. Thanks to this characteristics it can be used in three main modality:

  1. Simple tracker – Without any kind of device. Just get the power and it is ready to track both in Equatorial and Alt/Az axis mode.
  2. Wireless GoTo System - To be used with SkySafari and smartphones/tablets. In this mode the 24 star pointing model is already available. This modality is mainly
    suggested for visual observation.
  3. Full GoTo system mount controller – To be used with a PC. In this way it will be possible to use the Stargo System, via ASCOM driver, with the main astronomical softwares such Maxim, TheSkyX, Phd2, SGP, Carte du ciel etc. allowing the full
    control and features: home position, goto, park/unpark, autoguide, focus etc. This modality is mainly suggested for astrophotography. The System has been succesfully tested with Windows 7/8/10 (via ASCOM Driver) and OS X (LX200 classic). The StarGo Goto Control System was designed mainly for the Avalon Instruments mounts but, thanks to the programmable gear ratio and the motors kit available, it can be easily adapted to other mounts also.

The StarGo GoTo System it is composed by five main components:

The StarGo Control Box

The StarGO Control Box that can be embedded in the mount as for the Linear, M-uno and M-zero mounts, or in a separate control box for the M-Zero (and for its use with all other compatible third part‘s mounts). It has the duty to provide the smart interface between the internal motors and the external world. It performs all the communications with specific components (Focuser, CCD rotator, DSRL camera, and other auxiliary devices) using direct connections and with  Windows and  Mac computers via USB. The wireless  Wi-Fi and  Bluetooth capability is also integrated in the control box to interact with intelligent devices such smartphones, tablets and, again with Windows and Mac computers.

stargo controlbox 06 800

The StarGo Keypad

The StarGo Keypad allow the control of the mount, perform almost all the available and most needed operations as the Slewing, fine focusing, increase / decrease the mount Slewing speed, select system tracking speed (Sidereal, Solar, Lunar, Terrestrial)


stargo keypad 400


StarGO software

The StarGO software, entirely developed by Avalon Instruments, perform all the setup and management operations required for the mount control. The software allow to set all the basically options for the mount alignemnt as the Observatory Location setting, the polar alignment syncing. Via ASCOM driver it is possible to connect the system to third party planetary software to slew to target and shot pictures.
The StarGo software also allow to perform many “Observatory function” as the “Park” operation. For example by using this function, if a “Set park” is performerd after a session and the mount will not be moved from that Observatory location, in the next session a new alignment will not be required. In this way it is like “having an observatory”.

X-Solver tool

The X-Solver is an application based on the Plate Solve solution. With X-Solver it is possible to build Sky Model till 24 stars that can be saved and used later even during other night sessions.
With X-Solver application comes two very useful tools: the Sky Model and Polar alignment. The Sky Model allow to build easily a sky model up to 24 stars. The tool provide an intuitive GUI that shows a 2D representation of the sky top view that can be designed from the user simply by the mouse double click.
The modeling function is particularly useful in fixed observatory installations, however for the speed of its execution, it may be used also for mobile installations, especially for visual observation (after a short period of CCD use at the very beginning of the session).
The Polar Align is a tool for a fast and easy Polar Alignment by using the Plate Solve function.

x solver 620 desktop 800

The StarGO-BT application

The StarGO-BT application for Android devices that allows to interface them with the StarGO control box via Bluetooth connection. With this application the Android devices become like a control pad. This application, as well as the PC StarGO, is under continuous development to add new functionalities.

m zero vixen borg setup 04 rit stargo 800


AvalonStargo ASCOM driver


The AvalonStargo ASCOM driver that makes possible the interaction between the StarGO Control Box and the most used astronomical software applications such as Phd2, TheSkyX, SNPP7, Maxim, SGP, CartduCiel, Stellarium, etc.

Technical data

Technical Data
  • Equatorial and Altazimuthal GoTo system stepper motor based with programmable Gear Ratio (1234,123)
  • Configuration file saving feature.
System Speeds
  • Guide: From 0,05 to 0,95x with 0,05x increments
  • Center: From 2 to 10x
  • Find: From 10 to 150x with 0,05x increments
  • Slew: N. 4 speeds, depending on the mount "gear ratio", up to 1400x @ 12/18 VDC
Tracking Speeds
  • Sideral
  • Solar
  • Lunar
  • Terrestrial
  • Fine tracking adjustment feature
Autoguide Speeds
  • RA: From 0,05 to 0,95x with 0,05x increment step
  • DEC: From 0,05 to 0,95x with 0,05x increments
Input/Output Ports




Output ports
  • DSRL
  • AUX1: Hybrid Step Motor with a max current of 300mA when powered at >= 12 VDC
  • AUX2: Hybrid Step Motor with a max current of 300mA when powered at >= 12 VDC
Electrical Charateristics
  • Power Supply: 12 – 18 VCC stabilized. Current: 0,5 to 1,5 A
Control Operations
  • Goto, Sync, Park, Unpark
Updating FW
  • Via USB
Environment Operating Temperature
  • -20 ≈ +40 °C


User Manual

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