Thank you Keith,
Sounds like I will need to do this using my monorail view camera. Not the "one-shot". I think that I will try the one-shot approach too. Just to see what happens.
Just a thought ,though. The cut-off filters on the "one-shot" are very close to the focal plain,not to the lens. Therefor, we are talking white light for most of the distance the beams have to travel.
Bill