Definitions
Sorry, no definitions found. Check out and contribute to the discussion of this word!
Etymologies
Sorry, no etymologies found.
Support
Help support Wordnik (and make this page ad-free) by adopting the word bortle.
Examples
Sorry, no example sentences found.
vanishedone commented on the word bortle
BLDGBLOG: 'The forest, which covers 300 square miles and includes the foothills of the Awful Hand Range, rates as a 3 on the Bortle scale. The scale, created by John Bortle in 2001, measures night sky darkness based on the observability of astronomical objects...
'The IDA website itself contains everything that "locations with exceptional nightscapes" need to know to submit their application to be certified as "International Dark Sky Communities (IDSC), International Dark Sky Parks (IDSP), and International Dark Sky Reserves (IDSR)"... The Geauga Park District submitted their 34-page Lighting Management Plan... detailing various proposals for the reduction of local skyglow (as opposed to natural airglow), light trespass, and glare.'
December 29, 2008