Designed by astronomers,
reliable, compact, inexpensive
The Telescope Encoder and Sky Sensor (TESS-W) is the first model of TESS photometers, compact devices to monitor sky brightness every night developed under Stars4All project.
Designed by astronomers and calibrated on LICA laboratory at Universidad Complutense de Madrid the quality of the data is scientifically accurate.
“Absolute Radiometric Calibration of TESS-W and SQM Night Sky Brightness Sensors” Bará, Tapia & Zamorano (2019)