Ethernet Enabled Sky Quality Meter

The Unihedron Ethernet Enabled Sky Quality Meter (SQM-LE) is a precise instrument for measuring night sky brightness in magnitudes per square arcsecond, enabling astronomers and observers to quantify light pollution and document sky quality over time. Designed with a narrow field of view (~20 degrees FWHM) and an infrared-blocking filter tuned to visual wavelengths, it delivers accurate readings even at the darkest sites and features ethernet connectivity for remote monitoring and continuous data collection. With field-upgradeable firmware, open protocol documentation, and compatibility with multiple programming languages, the SQM-LE is ideal for professional observations, observatory automation, and long-term light pollution studies.