Test Results

 

Art. –Nr. BA-OR-18

Baader Planetarium Genuine Ortho 18mm

 

Sharpness:

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°.

 

Contrast:

Really good contrast.

 

Aberration:

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.

 

Summary:

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.

 

 

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