RAUK - Archived Forum - thermal imaging

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thermal imaging:

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will
Senior Member
Joined: 27 Feb 2007
No. of posts: 330


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Posted: 19 Sep 2010
Hi All

You may remember a while ago I was speculating about whether TI cameras which use heat rather than light could be used to locate our cryptic reptiles in the field.  Although reptiles are not homeothermic (constantly 'warm-blooded') they can warm up to temperatures above the background temperature by using behavioural mechanisms such as basking or flattening their bodies, to absorb heat by radiation, conduction or both.

I managed to get my hands on a TI camera and took it into the field yesterday.  Sure enough, it picked out a common lizard on a branch, as well as an adder on some short turf next to a hedge.  However I doubt it will substitute for footslogging, fieldcraft and the human eye, for the following reasons: first, they can't see a reptile on an equally hot background - eg a warm tree stump (a lizard became invisible, for example, in spite of holding the camera within a few cm of it); also, although the heat signature of the animal was partly visible if it was hiding in dense vegetation, there was often too much 'noise' from hot twigs, leaves etc to allow the reptile's heat signature to be distinguished from the other hot items in the field of view.  Oh, and they cost a few grand, too..  Nevertheless, it was interesting to see how common lizards and adders were achieving a body temp at least 10 degrees above ambient, on a mainly cloudy day.  Thermograph of lizard plus equivalent photograph of same lizard below, along with an adder.

Cheers

Will







tim hamlett
Senior Member
Joined: 17 Dec 2006
No. of posts: 572


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Posted: 19 Sep 2010

very interesting will, cheers.

tim


AGILIS
Senior Member
Joined: 27 Feb 2007
No. of posts: 694


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Posted: 23 Sep 2010
HI WILL HOW MUCH DO THESE DEVICES COST/ KEITH
   LOCAL ICYNICAL CELTIC ECO WARRIOR AND FAILED DRUID
will
Senior Member
Joined: 27 Feb 2007
No. of posts: 330


View other posts by will
Posted: 25 Sep 2010
Hi Keith

Apparently I borrowed a bottom of the range one, costing a mere 3 thousand quid...

AGILIS
Senior Member
Joined: 27 Feb 2007
No. of posts: 694


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Posted: 26 Sep 2010
Will if I order a couple is there a discount keith
   LOCAL ICYNICAL CELTIC ECO WARRIOR AND FAILED DRUID

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