>> a (video-) camera and some sort of image processing 
>> software

> It should be fairly straight-forward to either convert a 
> video image
> for examination by a PIC later or look at the video feed 
> in real time,
> if the contrast between target and hole was high enough. 
> You could
> try backlighting the target after a shot to make bright 
> spots or front-
> light it to make dark holes

Note that the original request was for a paperless target.

Also, "residence time" in the plane of the target is around 
50 uS.
The video "dot rate" would need to be "fairly high" [tm].


                Russell


-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist