Definition of Bortle. Meaning of Bortle. Synonyms of Bortle

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Definition of Bortle

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Meaning of Bortle from wikipedia

- 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...
- Robby Blake Bortles (born April 28, 1992) is an American former professional football quarterback who pla**** in the National Football League (NFL) for...
- John E. Bortle is an American amateur astronomer. He is best known for creating the Bortle scale to quantify the darkness of the night sky. Bortle has made...
- park is the darkest sky for any state park site in Oklahoma; the site is a Bortle 1 zone, thus making the park a big attraction for astronomers to view the...
- Laustsen et al., Pasachoff, Jones, van der Kruit, and Hodge et al. See also Bortle Dark-Sky Scale. The bright center of the galaxy is located in the constellation...
- entire world. The Bortle scale is a nine-level measuring system used to track how much light pollution there is in the sky. A Bortle scale of four or less...
- horizon are to all intents and purposes unobservable. Bortle, John E. (February 2001). "The Bortle Dark-Sky Scale". Sky & Telescope. Sky Publishing Corporation...
- original on 10 January 2019. Retrieved 8 November 2018. John E. Bortle (February 2001). "The Bortle Dark-Sky Scale". Sky & Telescope. Archived from the original...
- doi:10.1086/337968. S2CID 120493760. Online sources Bortle, John E. (February 2001). "The Bortle Dark-Sky Scale". Sky & Telescope. Sky Publishing Corporation...
- Australia B-Line bus route Chopin's Ballade No. 1 The darkest sky on the Bortle scale Search for "B1" on Wikipedia. All pages with titles beginning with...