QUOTE (Tarantula @ Jul 14 2008, 07:19 PM)

No? Why does glass on the astral block astral sight anymore than it does on the physical?
Mostly because in earlier versions of SR, glass was explicitly opague on the astral.
However, p114 of Street Magic says:
QUOTE
Items that are transparent or mirrored in the real world (like a car window) simply impair visibility as astral shadows. Since there are no ranged weapons on the astral plane and spell targeting depends on seeing your target, hiding behind physical shadows works as well as hiding behind a vibrant aura.
So it'd only be a -1 to -4 visibility modifier now.