Tag: bortle system

• How Dark (or not) my Sky is Really

  Today, we are going to talk about light pollution and dark skies, our view of the sky and my view of the sky in particular. We’re going to start with a little bit of a correction. I generally discuss the night sky as if it was around Bortle Class 5, that’s the level of light…

  Caoimhín de Bhailís

  May 7, 2026

  Astronomy, Astronomy Video

  Astronomy, bortle class, bortle system, changing skies, dark skies, dark skies ireland, light levels, light pollution, rural skies, science, space, stargazing, stars, urban skies, video