 | This article needs additional citations for verification. (August 2008) |
.jpg)
The Danjon scale is a five-point scale useful for measuring the appearance and luminosity of the Moon during a total lunar eclipse. It was proposed by André-Louis Danjon in 1921, when postulating that the brightness of a lunar eclipse was related to the solar cycle.[1] An eclipse's rating on the scale is traditionally denoted by the letter L.
- ^ Danjon, A. (1921). "Relation Entre l'Eclairement de la Lune Eclipsee et l'Activite Solaire". L'Astronomie. 35: 261–65. Bibcode:1921LAstr..35..261D.