Sky Quality Meter (SQM) - LE

Unihedron's Sky Quality Meter – LE (SQM-LE): Measure Night Sky Quality with Ethernet Connectivity

The Sky Quality Meter – LE (SQM-LE) from Unihedron is a specialized device designed to measure the brightness of the night sky on a continuous, automated basis. With its Ethernet connectivity, it enables astronomers, researchers and observatories to monitor light pollution in real time.

Main Features

• Ethernet connectivity : The SQM-LE transmits data in real time via an Ethernet connection, ideal for continuous, remote monitoring.
• Measuring range : Measures sky brightness in magnitudes per square arcsecond (mag/arcsec²), with values ranging from 16 (very bright sky) to 23 (extremely dark sky).
• Angular sensitivity : Angular sensitivity with a half-width at half-height (HWHM) of approx. 10°, enabling measurement of a 20° field of view (FWHM).
• Sensor : It uses a TAOS TSL237S sensor and a HOYA CM-500 infrared-blocking filter, ensuring that measurements are taken only in the visible spectrum.

Applications

• Continuous monitoring : Thanks to its Ethernet connectivity, the SQM-LE enables real-time monitoring of light pollution trends at a given site.
• Scientific research : Ideal for projects requiring regular, accurate data on the quality of the night sky.
• Fixed observatories : Perfect for astronomical observatories wishing to document sky conditions over the long term.

Delivery content

• Sky Quality Meter – THE
• Power adapter
• User's manual

Summary

The SQM-LE is an advanced, versatile tool designed to provide accurate, continuous measurements of night sky quality. With its Ethernet connectivity, it is particularly suited to professional and scientific users looking to reliably monitor light pollution in real time.