Step 4Put it together
iImage Information

Lay out the tape. The screen is located at the zero point, The lens, with a 6 inch focal length, at 24 inches from the screen and the target at 32 inches from the screen . This gives a magnification of 2x which also facilitates focusing. Place the UV irradiator off axis whilst shining on the target. The camera is placed off axis near the screen focused manually on the screen. The low light levels do not allow for auto focus so get it right before the lights go out.