Homebrew PCBs

>Can you tell me the distance from the top of the tubes to the top 
>of the exposure glass pane?

1.5". It's not glass BTW, it's non-UV blocking plexiglass.

> Are the tubes 18" of 2'?

They are 18" 15W tubes.

> Are the tubes 1" or 1.5" diameter?

1"

> What is the tube centre to centre spacing?

1.5"

Some notes:

1. Use a contact frame instead of weights especially when using 
something like plexiglass instead of real glass and especially in 
the absence of collimation.

2. If using plexiglass, make sure it's the type that doesn't block 
UV rays. 


--- In Homebrew_PCBs@yahoogroups.com, "John Craddock" 
<John.Craddock@...> wrote:
>