These remarkable new images of the solar corona were made possible by a pair of orbiting spacecraft, flying in precision formation 150 meters apart. The sunward one has a 1.4 meter diameter circular occulting disk. The relative positions of the two independent spacecraft are controlled to about 1 mm!
https://www.esa.int/...l_solar_eclipse
Great ESA video about the mission, here: https://www.esa.int/...clipse_in_space
Visual wavelengths:
Hotter corona details:
All the best,
Kevin