YozoraAtlasyo·zo·ra (夜空) n. [Jap.] night sky

How dark is the sky in Australian Capital Territory?

Sky darkness for 2 towns and parks in Australian Capital Territory, worked out from NASA satellite images of light at night (2025). 1 of them has skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Namadgi National Park (21.63, Bortle 4), the brightest Canberra (18.46, Bortle 7). Milky Way season in Australian Capital Territory runs February to October: on moonless nights the bright core stands clear of the horizon, climbing to about 84° 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 Australian Capital Territory with every place marked

Darkest skies in Australian Capital Territory

  1. Namadgi National ParkBortle 421.63

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

Brightest city skies in Australian Capital Territory

  1. CanberraBortle 718.46

All 2 places in Australian Capital Territory

Amber names are parks and certified dark-sky places. The figure is the Bortle class: 1 darkest, 9 city center.
Canberra7Namadgi National Park4