I thought the art and music of this game were very nice, and the idea of celestial navigation puzzles sounded very promising (and the game mechanics were unique too for an RPG Maker game), but unfortunately I had a difficult time figuring out what I needed to do. For instance, in the screen where the sextant is defined, I tried looking for stars that matched the image on the left, but couldn't find them, and after moving the right "eyeglass" around randomly I saw a twinkling star and that turned out to be the correct position, but I'm still not sure why. So I would suggest making it more clear what the objective is.
Overall, I think this game has a lot of potential if you decide to keep working on it. :)