Test Results


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.


Eye Relief:

The look into the eyepiece is just fine.


Mechanical Quality:

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.