Hi, I just polished out my 7.5" achromat and the next stage is a cell to be able to test the lens. Since I made a fraunhofer type lens, do I need to make an adjustable cell or will a simple cell do? From what I've read the fraunhofer does not need an adjustable cell! Regards, Alfredo _______________________________________________ ATM mailing list http://www.atmlist.net/