|
Gotcha, got my longitudes and laterals mixed up. The longitudinal colour aberration diagrams I have seen before show the telescope axis on the x axis and the paths of the different coloured light rays on the y so I was assuming that that pic was showing lateral colour aberration.
If I am reading it right now its showing that the FLT-132 is pretty well corrected for longitudinal colour aberration other than for the leftmost ray marked in blue. Strange then that the scale is on the x axis though, wouldnt you be most interested in knowing the distance along the y axis between the points the different colour rays cross it?
|