Rare card
Bortle scale
- Value
- 50 W
- Attack
- 278
- Defence
- 222
- Players
- 1
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.
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