If you wanted to observe a planet without being seen, assuming you had a
stealthy enough ship (and assuming that in this case the stealth
technology worked), which would be the more advantageous location:  The
L-1 (between the planet and the sun, about 1.5 million km in an
Earth/Sol style system) or the L-2 (beyond the Moon's orbit, again,
about 1.5 million km in an Earth/Luna/Sol style system)?

I can see that having the sun to your back, the L-1 scenario, would
possibly provide some EM interference, but it also might backlight you
to visual observation.  The L-2 scenario, though, put you in a position
where the planet was outlined by the star and you'd have EM issues
working against you.

Any thoughts?
--
Kurt Feltenberger
xxxxxx@thepaw.org/xxxxxx@yahoo.com
“Before today, I was scared to live, after today, I'm scared I'm not
living enough." - Me