Dear fellow nature lovers,
I am posing a question around the use of high powered torches for viewing our nocturnal counterparts.
What are the thoughts around a super bright rechargeable torch (similar to the 1,000,000 candle power one I purchased just the other day…) doing any damage to our little friends eyes on a dark night? Not that I would have done such a thing….
Cheers
Steve Potter.
Adelaide SA
PS. Any discovery of a pair of White-throated Nightjars and a pair of Sooty Owls in Bunyip State Forest, Victoria, with burned out retinas since Tuesday night would be purely coincidental…
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Steve,
I will forgive you for not recalling that I raised this issue on birding-aus back in March 1997 … anyway, the response from Jack Pettigrew which can be read at http://bioacoustics.cse.unsw.edu.au/archives/html/birding-aus/1997-04/msg00006.html addresses the point quite well.
Regards
Murray Lord ===============================
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Steve,
Probably the best answer, is to have someone shine the spot into you eyes (after they have adjusted to the dark) from a distance of some 10m. If you find it uncomfortable, there is a good chance that nocturnal birds or mammals will be similarly affected.
Cheers,
Carl Clifford
Dear fellow nature lovers,
I am posing a question around the use of high powered torches for viewing our nocturnal counterparts.
What are the thoughts around a super bright rechargeable torch (similar to the 1,000,000 candle power one I purchased just the other day…) doing any damage to our little friends eyes on a dark night? Not that I would have done such a thing….
Cheers
Steve Potter.
Adelaide SA
PS. Any discovery of a pair of White-throated Nightjars and a pair of Sooty Owls in Bunyip State Forest, Victoria, with burned out retinas since Tuesday night would be purely coincidental…
===============================
To unsubscribe from this mailing list, send the message: unsubscribe (in the body of the message, with no Subject line)
http://birding-aus.org ===============================
===============================
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http://birding-aus.org ===============================