Having made a passing glance through the Sidereals book, I still don't seem to have a grip on the mechanics of how Sidereal astrology works for the purpose of augury. Without getting too crunchy about it, can anybody explain to me, in brief, how Sidereals go about divining stuff, and their limitations in doing so (in other words, if you undergo Solar Exaltation, how much time does it take before those sneaky bastards find you?)