Star Hunter
30-05-2013, 10:31 AM
I'm planning to build a folded refractor for a 6" F15 achromatic lens in its brass cell. I need two 4" flats which I can get from Edmund Scientific in the USA, but need some tips as to spacing and tilt angles of these two mirrors in relation to each other, to the Obj. lens and focuser.
Thanks,
James
Thanks,
James