Partial phase of the Total Lunar Eclipse 8th September 2025
The redish fringe on the earth's shadow is real.
It is
due to Rayleigh scattering, where shorter blue wavelengths are scattered
more in the earth's atmosphere than red light.
Earth would be encircled by a "red sunset" if viewed from
the moon during totality.
Astro-Physics AP130GTX + AP field flattener, PMEII
Canon EOS R5
Copyright Peter J Ward 2025