. TESS photometers

TESS-W photometer is mounted on a weatherproof enclosure (87x75x45 mm). Wherever there is electricity and WIFI you can install it and get the measures online trough the accelerometers included to provide the pointing of the photometer.
Its temperature and IR sensor will let you know whether the sky is clear or cloudy.
Browse the poster presented during the IAU 2018 in Vienna for more info or check the article describing the device by Jaime Zamorano et al. 2016 The International Journal of Sustainable Lighting 35 (2016) 49-54
TESS-W was developed during the STARS4ALL European Project. This photometer uses Wifi communication to connect to a router that sends the data in real time using MQTT protocols. The data is available in real time using GRAFANA panels for visualization. Monthly sky brightness files using the IDA-IAU standard format with the data for each photometer is provided open for any interested citizen.
This is the photometer used in the fixed monitoring stations of the STARS4ALL network.

The small display shows the measurements.
The photometer can be connected via bluetooth to the smartphone app to display and to record your observations.
There are accelerometers included to provide the pointing of the photometer.
The inside battery is enough to register sporadic measures. If you want to use it on the go or for a night long series of observations you should connect to a power bank.
Download and install TESS-P app for Android and record your measurements along with your GPS location.
You can also use this photometer to map the sky brightness from a moving vehicle using a smartphone app.

The mount should be leveled and oriented to north.
After connecting to the TESS-P smartphone app you only need to press the small button to initiate the full automatic scanning.
The 140 data point all along the celestial vault are recorded and they are used to create a map.
The all-sky night sky brighness map is similar to those of the NixNox Project.

Optional watertight case for outdoor and transport protection