This Full Moon image is a result of an high-resolution mosaic composed by four panels each one of 30 images combined together to reveal a sharp and detailed surface up to the lunar limb. Taken on 25th October 2018 from Cumeada Observatory in Dark Sky® Alqueva Reserve, the final image shows that the moon is more then a grey body as it is normally perceived by our human eye. The color of this RGB image have been slightly increased revelling a strange but even so, real appearance, corresponding to the differences in the chemical constitution of the lunar surface, as changes in mineral content can produce subtle color differences in reflected light. The blue hues that can be seen on the seas like “Mare Tranquillitatis”, or “Mare Fecunditatis” (right center and edge) are revelling rich areas in titanium. According to Hawai’s Institute of Geophysics and Planetology, the presence of this unusual titanium-rich layer was produced by the crystallization of a huge ocean of magma that surrounded the Moon when it formed.
