Art. –Nr. SKY-APEX-28
Skywatcher Apex 28mm 2”
Very good sharpness for the whole field of view.
x-axis: distance from optical axis in °, y-axis: resolution in arc minutes
Apparent Field of View:
The apparent field of view is approx. 52°, a little bit less than the manufacturer data.
Very good contrast.
Relatively simple, but not bad.
A fine and optically good eyepiece, but the 52° field of view at 28mm can be reached with 1 ¼ inch barrel size also. Do not use with telescopes faster than F/6.