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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 quantifies the astronomical observability of celestial objects and the interference caused by light pollution .
Extreme naked-eye limit, Class 1 on Bortle scale, the darkest skies available on Earth. [58] +8.10: moon Titan: seen from Earth maximum brightness; largest moon of Saturn; [59] [60] mean opposition magnitude 8.4 [61] +8.29 star UY Scuti: seen from Earth Maximum brightness; one of largest known stars by radius +8.94: asteroid 10 Hygiea: seen ...
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 a special study of comets. He has recorded thousands of observations relating to more than 300 comets. From 1977 until 1994 he authored the monthly '"Comet Digest" in Sky and Telescope magazine.
While a true full moon happens at a specific time of the day or night, it may appear "full" for several days. 2024 a big year for astronomy in Ohio: 8 events from solar eclipses to full moons.
If a full moon is present, ... The Bortle scale is a nine-level measuring system used to track how much light pollution there is in the sky.
Full moons. Here are the rest of the full moons to anticipate this year. March 14: Worm moon. April 12: Pink moon. May 12: Flower moon. June 11: Strawberry moon. July 10: Buck moon. August 9 ...
The scale is logarithmic and defined such that a magnitude 1 star is exactly 100 times brighter than a magnitude 6 star. ... full moon: 8: 6.31 ...
January's full moon may have you howling! Nicknamed the Wolf Moon, this month's lunation will reach peak fullness at 2:27 p.m. PT on Jan. 13, marking the first full moon of 2025 and rising two ...