Because we have no redwood trees down here, I really don't know the answer to your question,
@pablosdiablo. My best guess is "yes". Staghorns don't take nutrients from the trees, only using them for support.
Staghorns grow in all sorts of trees here in SE Florida, but they generally are either put into the "crotch" of a substantial tree (such as a old, large oak tree) or they are hung via cables or chains from stout limbs. A 3'x3' staghorn carries a lot of weight. What do you plan to do to put it on that redwood?