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AAG CloudWatcher

Measuring sky conditions since 2008!


AAG CloudWatcher, a high precision, low cost system for monitoring the sky, with high quality and unique features.

AAG CloudWatcher advantages:

  • Full information of sky conditions
  • Very affordable price
  • Reliable readings
  • Easy interpretation of all information
  • Connectable to the SOLO CloudWatcher for low power, 24x7 availability
  • Software available for:
  •             Windows (free)
  •             INDILib (free),
  •             INDIGO (free)
  •             MAC OSX (developed by​ Richard Francis,​ GerSpatial, available from  the  AppStore             at a very  reasonable cost).
  •             And autonomously with the SOLO
  • ASCOM safety monitor and observing conditions drivers available
  • Very low maintenance
  • Extremely reasonable cost of eventual servicing / repairs
  • Product in constant review and improvement
  • With the experience and service of Lunático Astronomía

In addition, the AAG CloudWatcher software incorporates advanced features such as:

  • Compatible with most image capture / automation programs: Voyager, PRiSM, MaximDL, ACP, CCDCommander, CCDAutopilot, Maxpilote...
  • Multiple users in LAN (MASTER mode and REMOTE mode operation);
  • MASTER and REMOTE installations can be independently parameterized;
  • Sky temperature correction model to account for excessive atmospheric long wave radiation during summer;
  • All alerts can be defined as sound alerts, with a specific sound file to be played when the alert condition occurs;
  • Switch control can be disabled and be performed by an external program (suitable to control other equipment);
  • Automatic shutdown routine built in the firmware (user programmable)
  • Firmware may be updated by the user
  • A complete set of properties / methods for inter-program communications;
  • ASCOM & SGPro compatible using our ASCOM safety monitor driver
  • Can combine information from any standard weather station supported by Virtual Weather Station, Weather Display or Cumulus software (by using the free software AAG_WeatherCenter)
  • Several free programs for mobile devices, as the one developed by Francisco Jesús Cortés, to allow you to receive an alarm in, for example, your mobile phone

The AAG CloudWatcher comprises:

 ▬▬        A box with a special exterior finish that includes 4 sensors (and 2 optional ones) that are shown in the program through their corresponding graphs. They allow a thorough and easily understandable measurement of atmospheric conditions:

►    Clouds sensor

►    Rain sensor

►    Brightness sensor

►    Temperature sensor

►    Relative humidity sensor (optional)

►    Anemometer (optional)

▬▬        3, 5, 7 or 10m. (1) long detachable wheather-proof cable with IP68 connector (2), used to connect the cloudwatcher instrument to a PC. Extensors cable in the same measures also available.

▬▬        Relay (3) for observatory opening/closing.


(1) Choose your best option, between 3, 5, 7 or 10m. You can also use extensions for a total length of up to 30m (cable+extension/s). If you need another length contact us.


(2) The IP68 connectors make the installation of the unit so much easier - the cable can be routed conveniently through a conduit, the smaller side of the cable being a cylindrical connector only 19mm. in diameter.


(3) The Relay cable can withstand a voltage of 220 vol. But not being a security cable it is advised to connect it to low voltage devices (12 or 24v).

CloudWatcher and anemometer mounted
CloudWatcher and anemometer mounted
CloudWatcher and anemometer mounted

AAG CloudWatcher
Technical specifications

•     Power 12 or 15v, current < 1 A
•     IP68 conectors
•     RS232 Serial port
•     Size: 110*85*37 mm.

In 2008 Lunatico reached an agreement with Antonio Gomes Peres of AAG, for the manufacture and global marketing of the cloud detection device "AAG CloudWatcher". In late 2014, the agreement was extended to cover the whole production of the CloudWatcher, including software and hardware development.

The CloudWatcher is a high precision, low cost system for monitoring the sky condition. This has been achieved by, firstly, a clever product design by its creator Antonio Peres, and secondly, by the meticulous production from Lunático Astronomy.

But the AAG CloudWatcher does not stress only its low cost, but also by its high quality and unique features.

Its intuitive graphic software allows an inmediate and very visual reading of information. It lets the user set the measuring parameters, achieving a powerful and very accurate cloud detection. All alerts (cloudy, rain, etc) can be programmed to play sound files; that way, and using a couple of simple and inexpensive "walkie talkies" with "vox" function, the alarm can be heard away from the observatory, eliminating the need for a second computer.

From April 2011, it can read an optional anemometer to measure wind speed and includes a communications watchdog to detect PC hangups.s.

• Antonio Gomes developing the AAG CW.
• AAG CloudWatcher and anemometer mounted in the specially designed bracket for the best operation and performance of the both units.)


Peña Enebro, 8
28250 Torrelodones, Madrid


Phone: +34 91 859 55 67