Art. –Nr. SKY-SP-07.5
Skywatcher Super Ploessl 7.5mm
Sharpness is very good within 30° apparent field of view. Only close to the edges a little bit blurred.
x-axis: distance from optical axis in °, y-axis: resolution in arc minutes
Apparent Field of View:
Field of view is approx. 44°.
Due to the multi coating and use of just four lenses a very good contrast.
Short eye relief because of the short focal length. To have a view of the whole apparent field of view you have to get very close to the lens.
Fine. You do not need more to keep it for a long time.
A very good eyepiece, especially at this short focal length. Recommendable.