Concave mirror? How old is this? Most every school now uses either halogen or LED (my fave). Otherwise, good tutorial, though you would think a good parfocal scope wouldn't need to be raised. Shouldn't the objective just go right to the correct distance?
Concave mirror? How old is this? Most every school now uses either halogen or LED (my fave). Otherwise, good tutorial, though you would think a good parfocal scope wouldn't need to be raised. Shouldn't the objective just go right to the correct distance?
NorthForkFisherman 4 months ago