www.nightvisionforumuk.com

Hi guys just a heads up about a program on bbc2 right now about how animals see light differently to us. Could be interesting, could be a load of total Shyte. Who knows but it's there for anyone interested. Lol

Thought it would have been more topical and talked a bit about animals and ir light. Oh well I'm off to bed.

I missed it but thanks.

Here is a bit of light reading about Tapetum lucidum@

http://www.dcnr.state.pa.us/wrcp/wildno ... 20108.html

And the hardcore bit if you want it:

http://en.wikipedia.org/wiki/Tapetum_lucidum

Thanks Dave. I always wondered how dogs could see well enough at night to go around terrorising my sheep and now I know. I thought for some reason that a dogs night vision wasn't much better than our own. Interesting bit in show about how caribou see uv light, basically uv light reflects off snow and other objects which makes them look white however when a wolf comes along our human eyes perceive it to be well camouflaged as we see white/grey wolf on white snow, however as uv light doesent reflect off a wolfs fur the caribou see it as a black figure on a white background. Was quite interesting (at start anyway).

James19306 wrote:Thanks Dave. I always wondered how dogs could see well enough at night to go around terrorising my sheep and now I know. I thought for some reason that a dogs night vision wasn't much better than our own. Interesting bit in show about how caribou see uv light, basically uv light reflects off snow and other objects which makes them look white however when a wolf comes along our human eyes perceive it to be well camouflaged as we see white/grey wolf on white snow, however as uv light doesent reflect off a wolfs fur the caribou see it as a black figure on a white background. Was quite interesting (at start anyway).

I'm sure I read somewhere that washing powder makes our clothes reflect UV and some animals (rabbits, foxes?) can see it quite easily at night. To them we must stand out like a nutter in a disco.
I believe it's common place for some folk to never wash their hunting clobber in soap powder.

rodp wrote:

James19306 wrote:Thanks Dave. I always wondered how dogs could see well enough at night to go around terrorising my sheep and now I know. I thought for some reason that a dogs night vision wasn't much better than our own. Interesting bit in show about how caribou see uv light, basically uv light reflects off snow and other objects which makes them look white however when a wolf comes along our human eyes perceive it to be well camouflaged as we see white/grey wolf on white snow, however as uv light doesent reflect off a wolfs fur the caribou see it as a black figure on a white background. Was quite interesting (at start anyway).

I'm sure I read somewhere that washing powder makes our clothes reflect UV and some animals (rabbits, foxes?) can see it quite easily at night. To them we must stand out like a nutter in a disco.
I believe it's common place for some folk to never wash their hunting clobber in soap powder.

Wifey just uses a drop or two of washing up liquid to hand wash my gear.

Most of my shooting is sub 100 yards, knowing about their super eyesight, especially when there is little other light about is one of the reasons I try to be conservative about how much IR I use given their eyes are fully dark adjusted and they have such good detection.

Plenty of people shoot much further distances so fair play to them using more light than I need.

Since the biggest source of UV is sunlight, where's the UV coming from at night to spook the bunnies?

Cheers

Bruce

phoenix wrote:Since the biggest source of UV is sunlight, where's the UV coming from at night to spook the bunnies?

Cheers

Bruce

I think the light animals use to see at night is reflected from the moon and stars but our eyes just don't have the necessary hardware to see it. I read that cats can see in light 6times darker than us. Apparently our eyes actually filter out uv light which gives us much more detailed vision but reduces our vision in darkness.

The minimal wash idea is mostly to ensure little or no detergent or conditioner is scented but I also thought biological washing powder causes clothing to be more IR reflective to NV observers - as seen here in one of my first videos:
https://www.youtube.com/watch?v=wQoUkr36JgI&index=91