As we add features to our products we will continue to make these improvements available to our customers. Most of these upgrades involve the simple task of downloading an upgrade app (linked below) that, when run, upgrades the product’s firmware and/or the PC-based user interface software (e.g., Maestro).

From this page we provide the latest software versions. Customers are encouraged to upgrade to the current version; however, older versions are maintained in case they are required.

The new features of each version are detailed in the release notes linked below.

Upgrade Policy:

  • NOTE: Carefully read the Software License. By downloading any files from Astrometric Instruments, you agree to be bound by these terms and conditions. IF YOU DO NOT AGREE TO THESE TERMS AND CONDITIONS, DO NOT DOWNLOAD ANY FILES.
  • Registered customers will be notified by e-mail when a significant upgrade is available.
  • Notification of new upgrades is announced on the Astrometric users group.
  • Upgrades are down-loadable from this web page. There is no password necessary to download and install the upgrade however a Software License Code may be necessary to use the software.
  • Customers who prefer software upgrades on "hard media" can simply contact us and request the upgrade on CD-ROM. Astrometric will only charge for the cost of materials, shipping and handling, typically less than $15 in the U.S. and Canada.

Astrometric Telescope Control System user interface software and controller firmware upgrades

Note: Major firmware versions starting with 3.00.000 require a purchased software license to upgrade from an older version. Prior to installing telescope control system (e.g., PrimeTCS or SkyWalker/S-Box) upgrades be sure you have the 8-character software license code associated with your hardware’s serial number. Contact Astrometric support or visit our on-line store if you need a license.

The latest version of Maestro runs under all versions of Microsoft Windows from Windows 7 forward.

Simply run the installation "exe" file linked below to install or upgrade Maestro. The ATCS firmware (running internal to the S-Box or PrimeTCS) will be automatically upgraded by Maestro upon its first connection to the controller.

Version Release Date Release Notes Installation File
3.00.000 18-Feb-2015 Readme3_00_000.html MaestroSetup3_00_000.exe
0.29.052 12-May-2010 Readme0_29_052.html MaestroSetup0_29_052.exe


Maestro supports the ASCOM (Astronomy Component Object Model) and Software Bisque's X2 standards for interfacing to 3rd party software.  When Maestro is installed, the ASCOM and X2 support files that are specific to Maestro are installed if the installer detects that the ASCOM platform and TheSkyX is installed.  If these are installed after Maestro then simply re-run the Maestro installer to get the necessary files.

Maestro communicates with the ATCS controller via the Astrometric Telescope Control Language (ATCL). ATCL is typically communicated over serial link (e.g. USB or RS232) to the controller. ATCL provides a very rich syntax for telescope control. Independent software developers are encourage to interface to Maestro through ASCOM or Bisque X2 however contact us if Astrometric Telescope Control Language details are needed.

DomePro, FocusPro, FilterPro and RotatorPro user interface software and controller firmware upgrades

All these peripherals are ASCOM-complaint and require that the ASCOM platform is installed to operate. You can acquire the latest ASCOM platform from the http://ascom-standards.org website.

Product Version Release Date Release Notes Software Installation File
DomePro 1.10.005 18-Aug-2015 ReadmeDomePro1_10_005.txt DomePro1_10_005.exe
FocusPro 1.00.000 23-Aug-2013 ReadmeFocusPro1_00_000.txt FocusPro1_00_000.exe
FilterPro 0.30.000 14-Nov-2008 ReadmeFilterPro0_30_000.txt FilterPro0_30_000.exe

Note: On-site upgrade of the controller firmware, to be consistent with the user interface software, is available if the presently installed on-site firmware is version 1.00.000 or later. Contact us concerning firmware upgrade files and/or upgrade options for controllers with pre-1.00.000 firmware presently installed.

Note: each user interface program directly exposes an ASCOM-compliant interface. There are no separate files necessary to use each peripheral as an ASCOM-compliant device.

The above user interface software communicates with the hardware controllers via the Astrometric Telescope Control Language (ATCL). ATCL is typically communicated over serial link (e.g. USB or RS232) to the controller. ATCL provides a very rich syntax for instrument control. Independent software developers are encourage to interface to our software through ASCOM however contact us if Astrometric Telescope Control Language details are needed.

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