bortle scale

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Proper noun

1. {{lb|en|astronomy}} A nine-level [[numeric]] scale that measures the [[night sky]]'s [[brightness]] of a particular location.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.