Thermographic imaging for hunting?

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	Re: Thermographic imaging for hunting? « Reply #20 on: November 27, 2009, 05:40:33 am »

	Quote:	Posted by GoldDigger1950
Thank you, Brian, for your ever so helpful answer to the question.

de nada.... I thought you would appreciate it.

Right now, I really could care less.... some bug snuck an atomic device into my blood pressure system and I am going to be a bit sick for up to 3 weeks, if I do not croak, from it.... no, not H1N1, I had that 3 weeks ago, for the 3rd time in my life.... it was insignificant, but weakened my resistance! Whatever kind of bug it is, (Rhinovirus, possibly,) it has caused a severe inflamation, in my stomach, which in turn, irritates the Vagus nerve.... it is like a constant heart attack/asthma attack, with pain.

This has to be over, by spring, so I can get ME some of that $1200US/oz gold.

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	Re: Thermographic imaging for hunting? « Reply #21 on: November 27, 2009, 11:54:17 am »

Hope you get better soon, Brian.

Say, you could come down here. Just getting on to summer right now. Dry out, warm up, get better and then be back in time for spring. How does that sound?

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	Re: Thermographic imaging for hunting? « Reply #22 on: December 21, 2009, 09:40:14 pm »

i have been a thermographer for 20+ years and hope i can give you a little insight on how to use an IR cam for THing.
for an IR Cam to work there must be a temperature differential, the greater this differential the better for a novice. This is the first time i have considered using a cam for TH'ing and the first thing that comes to mind is looking for caches in walls, floors, ceilings etc. These caches will probably appear as well defined shapes in your image, they may appear hotter or colder depending on ambient conditions and the construction of the building you are searching. Focus is the most important concern for a thermographer, if yor camera has the ability to save your images, you don't want to take an unfocused img. You can correct all of your camera settings in the software that comes with your cam, but, you can't refocus a blurry picture. Also, when you are TH'ing you are doing a qualitative analysis, this means that you are looking for anomalies, things that don't belong in the picture. I hope I haven't confused the issue too much, most people confuse commercially available IR Thermography cameras with what they see in the movies.

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	Re: Thermographic imaging for hunting? « Reply #23 on: December 21, 2009, 11:29:05 pm »

"This is the first time i have considered using a cam for TH'ing and the first thing that comes to mind is looking for caches in walls, floors, ceilings etc. These caches will probably appear as well defined shapes in your image, they may appear hotter or colder depending on ambient conditions and the construction of the building you are searching. Focus is the most important concern for a thermographer, if yor camera has the ability to save your images, you don't want to take an unfocused img. You can correct all of your camera settings in the software that comes with your cam, but, you can't refocus a blurry picture. Also, when you are TH'ing you are doing a qualitative analysis, this means that you are looking for anomalies, things that don't belong in the picture."

erobbins1, this makes a lot of sense to me. Based on what you've explained, things like the size of the cavity relative to the surrounding wall and the average "thermal mass" or "thermal density" (probably not a proper technical term, but it helps me construct an analogy I can put my mind around) as well as the thermal conductivity of what is in the void versus the surrounding material would help determine how easy an anomaly would be to spot. The greater the difference, the easier to see

Thanks,

BA

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	Re: Thermographic imaging for hunting? « Reply #24 on: December 22, 2009, 12:45:57 am »

	Quote:	Posted by erobbins1
i have been a thermographer for 20+ years and hope i can give you a little insight on how to use an IR cam for THing. for an IR Cam to work there must be a temperature differential, the greater this differential the better for a novice. This is the first time i have considered using a cam for TH'ing and the first thing that comes to mind is looking for caches in walls, floors, ceilings etc. These caches will probably appear as well defined shapes in your image, they may appear hotter or colder depending on ambient conditions and the construction of the building you are searching. Focus is the most important concern for a thermographer, if yor camera has the ability to save your images, you don't want to take an unfocused img. You can correct all of your camera settings in the software that comes with your cam, but, you can't refocus a blurry picture. Also, when you are TH'ing you are doing a qualitative analysis, this means that you are looking for anomalies, things that don't belong in the picture. I hope I haven't confused the issue too much, most people confuse commercially available IR Thermography cameras with what they see in the movies.

Thank you for your clear and concise response to my question. Could you recommend a brand of thermography camera (hopefully a moderately-priced one) which you'd consider as adequate for t-hunting? If you have also used such cameras for work on soils, I'd love to hear your experiences as well.

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	Re: Thermographic imaging for hunting? « Reply #25 on: December 22, 2009, 06:52:12 pm »

At work I use a Mikron camera that cost around $50k, but, there are a lot manufacturers of thermal imagers today. Fluke, FLIR and RayTek make a few models that are "moderately" priced ($3k to $10k), i have used a RayTek (forget the model) that had a small screen for viewing, light weight and easy to operate. it also had onboard memory and came with software for editing and reporting. There are lots of used cameras for sale, i suggest that you pick a reputable vendor if you decide to go this route.

I work for a large utility company in the SE, most of my experience is in the field of electrical distribution systems, leaking valves and steam traps. Occasionally I locate hot spots on the coal piles or coal bunkers, this is the closest I get to use thermography on soils. Except for geo-thermal I can't think of any other applications to use IR for.

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	Re: Thermographic imaging for hunting? « Reply #26 on: December 22, 2009, 10:59:47 pm »

Thank you again, erobbins1 for the info. I think it's worthwhile to add such a camera to my tools. Will look for a used one!

2 other possible uses for a thermography camera that I can think of are the monitoring of temperature in compost piles (trichoderma does its work best in a specific temperature range), and the evaluation of water/heat stress on steep terrain plantings. But that's just the agronomist in me talking. Wink