Art. –Nr. SKY-LE-15
Skywatcher Long Eye Relief 15mm
Sharpness is decreasing already near to the optical axis, therefore just moderate.
x-axis: distance from optical axis in °, y-axis: resolution in arc minutes
Apparent Field of View:
Field of view is approx. 48°.
Between good and very good.
Chromatic errors (colored fringes) towards the edge.
Good quality with rubber eye guard, grip coated body.
Better than the 9mm, but also here the long eye relief lens combination is clearly an optical drawback. Take other eyepieces, if you do not need this long eye relief.