I somewhat recall Yoshi P or someone saying the constellations and lore surrounding them will be explored in Heavensward, which makes sense. So much of it will revolve around Ishgard, and with Astrologian coming with it, I can see this as being a necessary thing to explore in the game. So sit tight, it's coming. 
Also, that map you linked is for the constellations in XI, so they may not be the same with XIV. You would be better off going to the Observatorium in Coerthas and trying to get a good, close up screenshot of the star maps in there.
Also, that map you linked is for the constellations in XI, so they may not be the same with XIV. You would be better off going to the Observatorium in Coerthas and trying to get a good, close up screenshot of the star maps in there.
