Oh, no - Geoffrey Mandel is the author. It's just that he discussed the book with a number of fans before proceeding, and the Alpha and Beta quadrant stuff is basically the research of Christian Rühl (see http://www.stdimension.org/
) worked over by yours truly to best match what we knew of the Trek universe just before ENT premiered. So I get the generous "technical advisor" credit along with Bormanis, Okuda and Sternbach, while Christian gets actual "contributor" credit as due.
Basically, my contribution is limited to pp. 46-47, 62-67 and the fold-outs at the end - it's my clumsy artwork redone with smooth printing effects, plus a couple of added details. And by visiting Christian's website, you can see it's not particularly original art anyway. It's just something where Mandel and I happened to agree a lot.