Weimar Saxon-Grand Ducal Art School
Hasemann was the only son of a mechanic and left school at the age of fifteen to work in his father's shop. After displaying some artistic talent, he went to study at the Prussian Academy of Arts, the Weimar Saxon-Grand Ducal Art School and the Academy of Fine Arts, Karlsruhe where he was a student of Gustav Schönleber. In 1880, he visited the village of Gutach for the first time as part of an assignment to illustrate the novella "Lorle, die Frau Professorin" by Berthold Auerbach. Later, he and his brother-in-law Curt Liebich would establish an artists' colony at Gutach. In 1898, he was named a Professor by Frederick I, Grand Duke of Baden.