Night vision binoculars

[Michael Gochfeld]

I doubt that night vision binoculars (or even night vision scopes) would be
very useful in determining the amount of butterflies flying at night.

If you encountered one of the clouds, you could probably discern it, but my
experience looking at birds with these devices, is that they are too grainy to
use for single butterflies.  You might just as well watch the face of the moon
with a telescope (as was done for bird migration in the pre-radar days).

We use a Smith-Wesson scope to watch bird behavior WHEN WE KNOW WHERE THE BIRDS
ARE.  It's much less useful when we are scanning for birds, even when we used
it to scan for shorebirds along a beach (pretty much a one dimensional scan).
I can't imagine using them to pick out single butterflies on the wing, unless
the migration were really heavy.

Mike Gochfeld


 
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