AAG CloudWatcher cloud detector

AAG CloudWatcher cloud detector

(Cable: 5m., RHS: Without relative humidity sensor)

AAG CloudWatcher cloud detectorhigh accuracy, low-cost system.

AAG CloudWatcher advantages:

  • Full information of sky conditions
  • Very affordable price
  • Reliable readings
  • Easy interpretation of all information
  • Connectable to the SOLO for low power, 24x7 availability
  • Software available for:
  • Very low maintenance
  • Extremely reasonable cost of eventual servicing/repairs (*)
  • Product in constant review and improvement
  • With the experience and service of Lunático Astronomía

(*) Find here the pice list of the REPAIRS AND SPARE PARTS for the AAG CloudWatcher.

 The AAG CloudWatcher includes:
  • A custom box with a special exterior finish that includes:
    • Clouds sensor
    • Rain sensor
    • Light sensor 
    • Temperature sensor
    • Humidity sensor (HS versions)
    • Anemometer (optional external accessory)
  • Long weather-proof cable (several lengths) with IP68 connector
  • Relay for observatory opening/closing


►  The AAG CloudWatcher. All the data collected by the AAG sensors and the anemometer are reflected in the computer through their corresponding graphics. These allow a comprehensive and easily understandable measurement of atmospheric conditions:

Clouds sensor.

Through an infrared sensor of the AAG CloudWatcher measures the temperature of the sky, and an electronic thermometer measures the internal temperature. Both data are then related by a powerful formula used to determine the existence of clouds. The measuring result is easily read on the graphic "Cloud".

Unlike other detectors, the AAG CloudWatcher allows the user to set the parameters for measurement, and thus adjust the detection of clouds for each place.

AAG Cloudwatcher

Rain sensor.

CloudWatcher uses a variable capacitor to determine the existence of rain. In addition, the capacitor incorporates an internal resistance for heating the element, drying it, which allows a constant reliable reading.

AAG Cloudwatcher

Light sensor.

To distinguish between day and night. It can even detect the Moon.AAG Cloudwatcher

Temperature sensor..AAG Cloudwatcher

Relativity humidity sensor (HS versiones)

The data from this sensor are supported by the SOLO (attached image).Sensor humedad AAG

Windows program displays the value in the screen, with the dew point, and the data are including in the "Single line data" file (*).

Anemometer (OPTIONAL) Shows the wind speed.
AAG Cloudwatcher

(*) Full support for Windows will be included in a completely new program that we will release soon.

►  The AAG cable connects the CloudWatcher instrument to a PC and it is available in 4 lengths: 3, 5, 7 or 10m. It has a special weather-proof connector, IP68, which allows an easy and comfortable installation of the unit. The cable can be routed conveniently through a conduit, the thicker part of it being only 19mm in diameter.

IP68 Weipu connectors for power cable and anemometer

 AAG cloudwatcher


►   Relay (1) for observatory opening/closing, can withstand a voltage of 220 V. But not being a security cable it is advised to connect it to low voltage devices (12 or 24V).

Technical specifications:

  • Power 12 or 15V, current < 1 A
  • RS232 Serial port (**)
  • Size: 110*85*37 mm.

(**) USB to RS232 adapter available here.


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

  • 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 longwave 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);
  • Allows the electrical constants to be changed by the user;
  • A complete set of properties/methods for inter-program communications;
  • Compatible with existing firmware versions 1.xx, 2.xx and future version 3.xx;
  • ACP, Sequence Generator+, CCDCommander, CCDAutopilot, Prism, CCDAutoPilot, and Maxpilote compatible; plus any ASCOM-compliant software.
  • Can combine information from any standard weather station supported by Virtual Weather Station, Weather Display or Cumulus software.

Click here to take a look at the "Readme First".

AAG documentation:


Delivery period: Ships in 9 days


Selection: AAG CloudWatcher cloud detector

Product no. Cable RHS Price
BCW001-03 3m. Without relative humidity sensor $379.75
BCW001-05 5m. Without relative humidity sensor $385.00
BCW001-07 7m. Without relative humidity sensor $389.00
BCW001-10 10m. Without relative humidity sensor $395.00
BCW001-03-HS 3m. With installed relative humidity sensor $398.50
BCW001-05-HS 5m. With installed relative humidity sensor $403.50
BCW001-07HS 7m. With installed relative humidity sensor $369.00
BCW001-10-HS 10m. With installed relative humidity sensor $413.00


Product Note Status Price
AAG CloudWatcher Solo AAG CloudWatcher Solo
CloudWatcher relative humidity sensor update CloudWatcher relative humidity sensor update
AAG & anemometer Mounting Bracket AAG & anemometer Mounting Bracket
AAG & anemo Mounting Bracket with U bolts AAG & anemo Mounting Bracket with U bolts
Anemometer for AAG Anemometer for AAG
Anemometer with internal heating system Anemometer with internal heating system
15V DC - 1A Compact switching Power supply 15V DC - 1A Compact switching Power supply
USB to serial converter USB to serial converter
15V DC - 2A Compact switching Power supply 15V DC - 2A Compact switching Power supply
Anemometer v.1 to v.2 adapter Anemometer v.1 to v.2 adapter
Display accessory details

Browse these categories as well: Cloud Detector - CloudWatcher, Remote observatory, Remote observatory

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