On September 6th, 2006 I was making a
video of the Moon.
I was panning across Tycho when something
flew across the field of view.
It appeared to be casting a shadow on the
moon, suggesting it was quite close to the lunar surface.
It was a dark object and appeared to be
spherical.
I copied a small section of the video and attached it below.
The object will appear very brifly in the extreme upper left corner.
The shadow will appear in the top right of the image and move downward
toward the bottom left hand corner of the image.
Unfornately, I was using a very slow capture rate.
(1 frame every 1/4 second.)
As a result the fast moving object was blurry.

I doubt that this was a plane. It wouldn't have left a shadow on the
moon.
It peobably wasn't two planes. They wouldn't be flying in that close a
pattern.
I doubt it was alien spacecraft.
I doubt it was birds, since the only nocturnal birds we have around
here
are predators and don't fly in groups.
My best guess is that they were either bats or insects that got into
the tube.
Anyone have any ideas?
FOLLOWUP:
On my next night off I shot some more video. Within a five minute
period I saw three more UFO's cross my field of vision.
The third one actually did a U'ey . Again, suspecting bugs (And already
practically blind from observing the moon) I
grabbed my God-zillion power spotlight and shined it in the same
direction as the scope was pointing until a host of little
flying friends had accumulated. Then I killed the light and watched the
video screen.
The experiment worked. Over the next few minutes I observed numerous
little UFO's flitting across the screen .
The acrobatics (aerobatics?) were quite tremendous.
So, if you ever want to see a UFO, grab your scope and spotlight,
maybe tie a piece of fruit onto your spider vanes
and start recording!