Star Maps on Chinese Ceramics?

Hello,

I am doing research on the use of celestial bodies (stars, planets,
etc...) on ceramics.  I am interested in pieces from China that may
have used this as decoration or scientific purposes.

I have not been able to find much, and that has frankly surprised me.
Given China's long history of astronomy, I would have thought there
would be plenty of examples.  (Checking, Google, various books,
museums, etc...)

You can see my attempts at research on this matter on my weblog
http://john-norris.net.

If anyone can lead me in the proper, or even likely direction, I would
most appreciate it!

I will be researching other countires in cultures in the future.

Thank you for your time,

John