Editing Lunar eclipse (section)

== Danjon scale ==
[[File:Blood Moon.svg|thumb|The Moon does not completely darken as it passes through the umbra because [[Earth's atmosphere]] [[atmospheric refraction|refracts]] [[sunlight]] into the shadow cone.]]The following scale (the [[Danjon scale]]) was devised by [[André Danjon]] for rating the overall darkness of lunar eclipses:<ref>{{Cite web |url=http://skytonight.com/observing/objects/eclipses/3304036.html |title=Observing and Photographing Lunar Eclipses |last1=Deans |first1=Paul |last2=MacRobert |first2=Alan M. |date=16 July 2006 |website=[[Sky & Telescope]] |publisher=[[F+W]] |access-date=7 January 2007 |archive-date=20 May 2007 |archive-url=https://web.archive.org/web/20070520233320/http://skytonight.com/observing/objects/eclipses/3304036.html |url-status=dead }}</ref>

* ''L'' = 0: Very dark eclipse. Moon almost invisible, especially at mid-totality.
* ''L'' = 1: Dark eclipse, gray or brownish in coloration. Details distinguishable only with difficulty.
* ''L'' = 2: Deep red or rust-colored eclipse. Very dark central shadow, while outer edge of umbra is relatively bright.
* ''L'' = 3: Brick-red eclipse. Umbral shadow usually has a bright or yellow rim.
* ''L'' = 4: Very bright copper-red or orange eclipse. Umbral shadow is bluish and has a very bright rim.