Search For Planets, Super Nova Flashlight

Hello Everyone,

I believe there was an observed supernova event last year. That was
extremely bright.

My question is this ... "Given that we know the source of the super
nova event, can we not use the light from that event to image distant
planets"

I imagine people have asked this before, so Im just curious.

This isnt my field, so this is just a philosophical question, but given
the source of this event, it must be possible to pick a few candidate
solar systems, where the light from the supernova event might bounce of
any orbiting planets, before making its way to Earth. I'm quessing we
are looking for a flash of reflect light that will last 1 second. Not
much time, and because of the speed of light, and the unknown position
of the planets orbits, it will require looking at the same star system
for an extend period.

If this is possible, I quess it would be years before we can see any
reflected planet light from the closest solar system. But if can deduce
when to look, and observe a planets reflect light ... then we would not
only know the if the closest solar system has planets, but we would
also know the exact distance to the source supernova event, and have a
possible road map of where and when to look for similar planet
reflected light in other solar systems.

Just an idea

Cheers

Steve