It's called Scale Spacecraft Modelling (http://www.amazon.com/Scale-Spacecraft-Modelling-Mat-Irvine/dp/1861267746) and it's an exceptional book.
I met Mat last year at iHobby Expo in Chicago and we've discussed his book several times. As Mat put it, "Scale Space Modelling came about in 2005 when an editor at Crowood Books approached me, as they wanted to add a spacecraft modelling book to their new range of modelling books. SSM was compiled as a book that would cover all aspects of spacecraft modelling from commercial kits, (well those that are still made!), simple conversions, more complex conversions, detailing, decals, painting, weathering (which is where I could also touch on SF), dioramas, photography to a certain extent and, to end, a complete scratch-build."
Highly recommend!
Rob