The Bortle Scale

An interesting blog, which has a new scale on me: the Bortle Scale.
This is a scale which measures how dark the night sky is.
Here's a rather wonderful night time image by Gary Pearson, a local photographer who shares plenty of images of Norfolk on his Facebook page.
I'm fortunate to live in a place with dark skies and great stars on a clear night.
Check out Brendan Conway's excellent StoryMap which explores Dark Sky Tourism, which you can see on this previous blog post on Dark Skies.