25mm modified achromatic by Meade, about 25 years old
Very good up to the edges.
x-axis: distance from optical axis in °, y-axis: resolution in arc minutes
Apparent Field of View:
Field of view is 39°.
Not convincing. Today’s multi-coatings are clearly better.
Very simple manufactured, e.g. loss of coating (paint) after some use.
Astonishing sharpness, but the lack of contrast makes it a not recommendable eyepiece.