Please explain why using grid-based collimator wouldn't provide the same information, with far less trouble.
John, though I prefer a different way, a grid style collimator is also a very good method.
Some love to be contrary, for whatever reason. While they're arguing about needing a Kleenex or a kleenex, their noses continue to run.
Hope Christmas was good for you and yours.
Good shootin'
-Al
