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John E. Bortle
American amateur astronomer · United States · Scientists
John E. Bortle is read about 7.5 times a day, in 5 languages.
A typical day, 30 days to 24 October 2026
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Something wrong?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.
Text from Wikipedia, CC BY-SA 4.0
About this person
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.
Text from Wikipedia, CC BY-SA 4.0
Country
United States
Category
Scientists
Type
Scientist
Scientists from the United States 6
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