Eyepiece, 1.25", W70 Series2, 4.0mm

USD $60.00

1.25" 4mm has 70 Degree Apparent Field, 12mm Eye Relief, eyeshield, Multicoatings.  This 5-element design will afford twice the sky coverage of an equivalent Plossl as well as a comfortable eye relief.  Ideal planetary ocular.  Threaded for filters.

W70 series eyepieces offer a wider field of view and more comfortable eye relief than Plossls. The 1.25" W70-4mm has (6) elements, 70 degree AFOV, 12.5mm eye relief and negative achromat compensation, eliminating spherical aberration. Excellent color correction, rubber grip, fold-down eyeshield and multicoating are features. Performance specifications on request.


Data sheet

Barrel Diameter
Apparent Field of View
Wide Angle
Focal Length
4 mm