Lunar Eclipse Maestro Icon

Moon-Earth Umbra/Penumbra diagram

The eclipse Moon-Earth Umbra/Penumbra diagram is displayed in real time at the observer’s location. Two orientations are available:
- the zenith up or horizontal coordinates (view matches what you see through binoculars),
- the celestial north up or equatorial coordinates.

Eclipse Moon Earth Umbra Penumbra Diagram Moon Earth Umbra Penumbra Diagram Contextual Menu
The Moon-Earth Umbra/Penumbra diagram not only shows the relative positions, but also displays:
  • the ecliptic
  • the celestial north
  • the lunar north
  • the Moon’s surface
  • the Earth’s umbra and penumbra outlines
  • the elevation and azimuth of the Moon or the Earth’s umbral/penumbral shadow
  • the sunrise and sunset times
A contextual menu that can be invoked with a right click over the Moon-Earth Umbra/Penumbra diagram will let you select various options:
  • enable/disable the display of the ecliptic as a dotted yellow line
  • enable/disable the display of the celestial north as a red tick mark
  • enable/disable the display of the lunar north as a green tick mark
  • enable/disable the display of the Moon’s surface
  • enable/disable the display of the Earth’s umbra and penumbra outlines
  • enable/disable the switch between horizontal and equatorial coordinates
  • display or hide the lunar or Earth’s umbral/penumbral shadow elevation and azimuth in degrees
  • enable/disable the display of the times of sunrise and sunset