Got this one done well ahead of schedule thanks to some automated image processing.
This book is much like the Gundam Profile TR-1 and Macross F 3d Archive books, lots of model displays including highlights on modifications as well as a fair bit of art. This one focuses on the Astray stories, the Astray units themselves and the related MS' (including some damned goofy looking ones). It's a pretty good book.
Gundam Seed Astray Masters