Mystara Zodiac Constellation Map

Nice map.  
Though it is more a ritual map than a presentation of the sky
accoding CM& Tree of Life adventure  Starmap

It is more chaotic placed, canonnically...
And....even there they forgot the motions of the planets, and Mystara itself.....something I intend to solve somewhere this year.(I intend to make a multi layered movable star/constelation map)

I also advise to read the following topic on the Piazza Mystara solar System where the planets and the astrology are worked out in more detail.
Then you will have even more info, to use

Lastly; I rediscovered an old adventure where I used the stars to their best (Henges, meteor impact, etc.) i will release this material soon too. 
It is a high level adventure, or more a quest for an artifact named Diazul the Bonecarver.
Watch me here and follow my Blog, and soon more will be revealed.Breath of Mystara
(where btw more interesting stuff can be found  )