Rob,
I don't think UV light would be of much use, nor very practicable. UV
light is very damaging to the eyes of mammals (and even more so to
birds, with their ability to "see" UV), as anyone who has copped a
strong welding flash would agree. Also, because UV light is strongly
absorbed by the air, a UV light source sufficiently strong enough to
be used as a spotlight would be a fairly hefty device to lug around.
You would probably need a small Klieg light with an UV filter, then
you would need a truck to carry around the power supply.
Cheers,
Carl Clifford
On 22/09/2009, at 12:07 PM, Rob Geraghty wrote:
Out of interest, have there been any studies on the use of Infra Red
or Ultra Violet lights in observations of animals at night? I've seen
them used in documentaries with the claim that they disturb animals
less, so I wonder if they'd be a useful tool. When I bought my video
camera in Japan back in 2002, I saw a clip-on IR movie light which
claimed to be for exactly this purpose. I also saw a parabolic
microphone which I wish I'd bought, but I digress. :)
Has anyone tried IR or UV lights to observe animals or birds at night?
Rob
=======
Rob Geraghty
===============================
www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
===============================
===============================
www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
===============================
|
