Thanks for you comments Jason. Your avatar tweeeeked some of my meurons and sent me back to the net.
From the catseye web page it appears that there is no shipping charge, so the price difference is as you say, must check, (no additional shipping from atsrosystem for me).
I do assume that the Astrosystems units will also be of good quality (but I do make an ass of myself on a regular basis). I appreciate your comments regarding the Astrosystems AC and will keep them in mind.
Richard
ps I'm confused as to weather you can use the AC in the dark, I have assssumed that all you need to do is shine a light down the tube.
