SQM 20.92

A Sky Quality Measurement of 20.92 is a very high value (and unfortunately exceptional).

SQM Measurement the night of 6 to 7 November 2024, with a maximal SQM of 20.94

The meteo conditions: a high pressure high over Western Europe, with mist. It was not a clear sky however, it was simply dark because of the dense mist. The blue graph indicate sthe sky temperature (IR measured), this needs to be way negative for a clear sky.

Also remarkable is the jump in SQM at the moments the public lighting switches off and on. The sky dims with a full unit of SQM. Despite the better LED fixtures, there is still a large impact of the public street lights.


Discover more from DROGENBERG

Subscribe to get the latest posts sent to your email.

Leave a Reply

This website only uses statistical cookies. No personal data is collected or shared. 

Discover more from DROGENBERG

Subscribe now to keep reading and get access to the full archive.

Continue reading