The Voynich Manuscript contains many images of stars with a dot in the center. Following the stars brought me to couple manuscripts from the Universitatsbibliotek Heidelberg. The first one, Codex Manesse (written between 1300-1340) Cod. Pal. germ. 848 (visit here ) contains a drawing of seven-point stars with dot in the center on the coat of arms of person named von Trostberg and on the page dedicated to Kristan von Hamle. The manuscript also pictures very Voynichese cross-bow, crowns and a lady carrying a torch on the helmet of Ulrich von Lichtenstein (representing the knightly philosophy of 'Serving a Lady').
Naked lady with a torch also appear in Das Buch der Natur manuscript ( written between 1442-1448, Cod. Pal. germ.300, visit here ) in the same library along with other naked royalties covered with stars and mermaid swimming in green water.
Another coat of arms picturing a star with a dot in the center can be seen in Chronik des Konstanzer Konzils (written between 1414-1422, XVI.A.17, National Library of the Czech Republic, visit here ). The star belongs to Her Johannes Luti of Constance.