After Tycho Brahe had fallen out of favour and left Denmark, Christian Longomontanus had become Christian IV's new astronomer and the first professor of astronomy at the University of Copenhagen.
Po tom, co Tycho Brahe upadl v nemilost a opustil Dánsko, se Christian Longomontanus stal novým astronomem krále Kristiána IV., a zároveň prvním profesorem astronomie na Kodaňské univerzitě.