YozoraAtlas

How dark is the sky in North Aegean?

Sky darkness for 2 towns and parks in North Aegean, worked out from NASA satellite images of light at night (2025). None of them have skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Chios (20.10, Bortle 5), the brightest Mytilene (19.63, Bortle 5). Milky Way season in North Aegean runs March to September: on moonless nights the bright core stands clear of the horizon, climbing to about 23° at its highest.

19 Bortle class, 1 pristine to 9 city center park or dark-sky place city

Numbers like 21.95 or 16.97 are the brightness of the sky overhead on a clear, moonless night, in mag/arcsec². The scale runs backwards: a lower number means a brighter sky, from about 22 for a natural sky to about 17 in a city center.
How the readings are made

NASA satellite night-lights map of North Aegean with every place marked

Darkest skies in North Aegean

  1. ChiosBortle 520.10
  2. MytileneBortle 519.63

Among the places on this site. Plenty of land between them is just as dark, with no town or park to name it by.

All 2 places in North Aegean

Amber names are parks and certified dark-sky places. The figure is the Bortle class: 1 darkest, 9 city center.
Chios5Mytilene5