[mhuxt]

Well,

I'm going to pass into the realms of the speculative now, but is there any chance it is:

- Infrared? (I "think I saw somewhere" that some Luftwaffe nightfighters did have such equipment)
- Night glasses? (fixed to enable a steady look at whatever's ahead, without taking hands off the controls?)
- Some kind of IFF interrogator? (Again, I've read that one item in the box of tricks in Mossie nightfighters was an apparatus to trigger some kind of light, perhaps ultraviolet, hence the need for a special lens, in the tail of friendly bombers).

I'm really out of my dept with all of that, just hoping to stimulate debate.

Cheers,

Mark