TESS photometer versions

TESS-W  is the photometer you need to continously monitoring the sky brightness at night

• TESS-W photometer is mounted on a weatherproof enclosure (83x60x32 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
• This is the photometer used in the fixed monitoring stations of the STARS4ALL network.

TESS-P has been designed to use as a hand help portable photometer

• 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.

TAS allows you to obtain all-sky brightness maps

• 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