First you need to use the Telescope and find the coordinates.
Others, Bekarna's Observatory
Locations on Bekarna's Observatory
1
Orrery Controls
Related quests: Bekarna's Folly
Show the map2Telescope
Related quests: Bekarna's Folly
Find and read all four records: The Huntress, The Panther, The Leviathan, The Kingfisher, wait till night, then use the telescope.