Bortle Dark-Sky Scale

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11	132 Birriel et al., JAAVSO Volume 38, 2010 Documenting Local Night Sky Brightness Using Sky Quality Meters: An Interdisciplinary College Capstone Project and a Add to Reading List Source URL: www.aavso.org Language: English - Date: 2010-09-27 11:30:25 Light pollution Astronomy Measurement Visibility Apparent magnitude Bortle Dark-Sky Scale Sky brightness Morehead State University Night sky Observational astronomy Lighting Light
12	Chadwick A. Moore Visual Estimations of Add to Reading List Source URL: www.georgewright.org Language: English - Date: 2002-04-18 15:08:05 Space Bortle Dark-Sky Scale International Dark-Sky Association Skyglow Limiting magnitude Sky brightness Apparent magnitude Naked eye Night sky Observational astronomy Astronomy Light pollution
13	PDF Document Add to Reading List Source URL: media.skyandtelescope.com Language: English - Date: 2009-03-12 08:42:47 Light sources Space Measurement Amateur astronomy Bortle Dark-Sky Scale Scales Naked eye Limiting magnitude Milky Way Observational astronomy Astronomy Light pollution