Where can I get information about Hindu astronomy?

One book I have found very helpful is 

"A Concise History of Science in India"
D.M. Bose, S.N. Sen and B.V. Subbarayappa
1971
Indian National Science Academy, New Deli
I got this book at the Library of Congress, and you might be able to get it through your local library. The book has a large section that discusses Indian astronomy.
Copyright 1997 Dr. Sten Odenwald
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