Bortle scale
Scale for measuring the brightness of the night sky
5,1206,190
Rare
Bortle scale
Scale for measuring the brightness of the night sky
The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky's brightness of a particular location. It characterizes the observability of celestial objects, taking into account the interference caused by light pollution.
- Attack
- 5,120
- Defense
- 6,190
- readers / month
- 13,082
- Article length
- 16 kB · 25 languages
Text from Wikipedia, CC BY-SA 4.0 · Authors
Bortle scale is a Rare card because its Wikipedia article was read 13,082 times in the last 30 days. Its 16 KB of text give it 5,120 attack, and coverage in 25 Wikipedia language editions gives it 6,190 defense.