Photometer network

Get access to sky brightness measures every day

Professional astronomers analyzing the data

Purchasing TESS photometer means collaborate with the Spanish Society on Light Pollution Research REECL

Where are they?

TESS Photometer

Designed by astronomers, compact, inexpensive

  • The Telescope Encoder and Sky Sensor (TESS) is a compact device to monitor sky brightness every night.



  • TESS photometer is mounted on a weatherproof enclosure. Wherever there is electricity and WIFI you can install it and get the measures online trough the remote observatory.


  • Its temperature and IR sensor will let you know whether the sky is clear or cloudy.
Check Today's data

TESS photometer

Developed at UCM

Already have one?

Read the manual before installation

Download it here

We are still testing prototypes. TESS photometer will be available very soon for everybody!