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(meteorobs) RED LIGHT!!
Using only the filter provided with the flashlights
is usually not enough, as the filter
has a high light transmission. I use a small
flashligh with a red acrylic glass plate
and 4 - 5 layers of white printer paper. This is
enough for me as I only use it to look
at my watch and plotting charts. It would certainly
be no use for any other task -
such as looking for your lost pen in the
grass...
I too get really agitated by bright flashlights.
There were several incidents on the
recent camp. One night a journalist drove right up
to our observing spot, while we
were observing meteors. We explained to him the
importance of shutting of your
lights while driving up to
astronomers.
One older chap at the camp, a really strange fellow
lost his red flashlight one night.
The flashlight was bright enough to signal a ship
20 miles away. The guy then pulled
a huuuughe flashligh out of his bag and started
walking around us (no less than 6
observers) with the flashlight on, asking us
whether we had seen his 'small' flashlight.
The thing was big - something like car floodlights.
After he quit his searching, reasoning
it would be better to look for it during the day
(!!!) we all had to take a long break, just
to sufficiently dark adapt our eyes to resume the
observations!
But even this cannot compare with the floodlight
that interrupted our observations
on August 13/14 1999. About a kilometer south of
MBK there is a small farm.
It wasn't really notable for anything until that
night the farmer turned on the
huge floodlight and for some reason chose to point
it directly at our observing
site. The thing must have been powered by a nuclear
reactor or a warp drive
of some sort! It was brighter than the full moon,
even from a kilometer away!!
There has been some discussion whether the
flashlight should be red, with
some arguing that just about any color will do. I
disagree. The human eye
most sensitive to green light and from my
experience I can say a red light
is much better than anything else.
Clear skies!
Jure A.
P.S. - while plotting, has anyone ever noticed a
human being lacks a third hand?
Or several fingers? ;)