Art. –Nr. BA-OR-18
Baader Planetarium Genuine Ortho 18mm
Perfect sharpness nearly over the whole field of view. Especially to the edges better than our Plossl- and Super Plossl eyepieces.
x-axis: distance from optical axis in °, y-axis: resolution in arc minutes
Apparent Field of View:
The apparent field of view is about 40°.
Really good contrast.
Very small pincushion distortion, nearly not recognizable.
The look into the eyepiece is just fine.
The very good quality is described on the main ortho page.
In comparison to the Super Plossl eyepieces on the cheaper side the advantage is better edge sharpness, a little bit better contrast and lower sensitivity to reflexes. Its called a fine eyepiece all around, and that is correct.