Bill, thanks. I have been using Dioptrx since about 2007 on and off; mostly off. Before I got them I went to my ophthalmologist to see if my eyes could be corrected. For reasons I won't go into they can't be. So I got bifocals without Progressive lenses instead thinking that I could just use my eyeglasses to correct the astigmatism. However, I never liked viewing with my eyeglasses and still don't so I bought the Dioptrx for three Televue eyepieces that I had at that time. And the rest is history as they say.
It is a brand new experience for me to use the Dioptrx with the Questar and I must say that it is quite nice to be able to tune out (by turning the Dioptrx) the astigmatism. I still wear bifocal eyeglasses with the line. I just got used to them, and like them more that progressives. Go figure.