Thermal binocular users, advice on double “black eye” please.

[JTO]

This thread reminds me of "George Washington, who couldn't tell a lie, Richard Nixon, who couldn't tell the truth, and Kier Starmer, who couldn't tell the difference".

 

[NoIDeer]

It's only been touched on but has anyone tried a red filter in the eye piece?

I like the idea of taking a bag of scientific chocolates to test this.