[1] She was the daughter of painter, engraver, and amateur astronomer Georg Christoph Eimmart the Younger, who was also director of the Nuremberg Academy of Art, the Malerakademie, from 1699 to 1704.
[5] The profession of Maria Clara Eimmart’s father was lucrative, and he spent all of his earnings in the purchase of astronomical instruments and on building (in 1678) a private observatory on the Nuremberg city wall.
Muller was so influenced by the family love for astronomy that he became a diligent amateur and afterwards a professor at Altorf, where he used his skill in depicting comets, sun-spots, and lunar mountains aided by Maria Clara.
These paintings are in excellent agreement with text descriptions of the event and are now of considerable scientific importance, being a unique depiction by a trained astronomer of the solar corona during the Maunder minimum.
Twelve of these were given to Luigi Ferdinando Marsili, a scientific collaborator of her father's, and ten survive in Bologna, together with three smaller studies on brown paper.