
Strathnairn community now have the empirical data required to move their DarkSky International application forward. This baseline is already being used to influence local authority planning and safeguard rural night skies from light pollution.
Recent sky quality tracking shows a stark contrast across our region. Moving southwest from Culloden Moor toward Errogie (near Inverfarigaig), repeat sampling with Unihedron SQM-L meters recorded a shift from 20.38 to 21.47 mag/arcsec².
A 1 mag/arcsec² difference might not seem much but this astronomical scale is logarithmic. This means the skies over Errogie are approximately 2.5 times darker than those just east of Inverness.
Read the full update, tracking methodology and project timelines here.





