I once had a dos program which would do calculations on illuminated field size at 100% and 70% illumination , but I cant find it or remember what it was called. Does anyone here know it?
I have newt v2.5 and the woden optics Diagonalcalculator, but these dont give me the answers that I need.
I have just bought a new scope sight unseen and Im going to have to make a new tube for it and fit a different focuser due to design issues. More on that later......
