Danjon Scale
The Danjon Scale is a five-step scale devised by French astronomer Andre-Louis Danjon to measure the brightness and color of the moon during a lunar eclipse.1
Fast Facts
- L=0—A very dark eclipse: during totality, the moon is nearly invisible2
- L=1—Moon is gray or brownish2
- L=2—Moon is deep red or rust-colored2
- L=3—Moon is brick red2
- L=4—Moon is very bright copper-red or orange2
Related Pages on Mahalo
Lunar Eclipse February 20-21, 2008 | Lunar Eclipse August 16 2008 | Lunar Eclipse February 20 Videos | The Moon Moon Transit of Earth Video
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