Mars, captured on 9/Feb from Mty Mexico, when its opposition was on 16/Jan.
The dark parts of Mars constantly change shape over time, mainly due to the movement of dust during sandstorms that uncover and cover darker surfaces.
The Earth manages to make almost two complete orbits around the sun when Mars only makes one, so the opposition of Mars occurs every 26 months.
EdgeHD 11″ Telescope
ZWO ASI290MM Mini Camera + 3x Barlow
SkyWatcher CQ-350 Mount
Astrodon RGB Filters, Baader UV/IR cut for luminance