Hi DL
I can't really add to the contibutions so far other than a tip I use. I place a white sheet on the ground and place my trap on it. This way any moths that don't go in the trap sometimes gather on the sheet. I have caught some decent moths that way.
I have to be honest I normally trap on Friday and Saturday nights only and not through the night on either nights. I usually stay up with it and turn it off between 00:30 to 01:30am. I cover the trap then check it out in the morning.
As I am trapping I can jar the specimens that I see on or around the trap, photograph them and release them after I have turned the trap off.
I don't have a sophisticated system like the other guys but I have attached the trap I use. It is home made and certainly does the job for me and I live in Urban Coventry.
I am going to start a thread about tips and hints for Moth Traps. I could certainly do with a lot more information as I am still very much a novice and it would be good to see what set up's you guys use.
John