clear sky

Forums Spectroscopy Auroral light pollution clear sky

Robin Leadbeater

North West Cumbria.  Clear skies are like hen’s teeth around here and once again have coincided with near full moon 🙁

I did not notice any aurora visually, though there was a photo on the local weather showing it low in the north.  The spectrograph is very sensitive to this line though which is always present at  a background level even when there is no aurora.