Eyepiece, 2", Speers-Waler Series4, 25mm
USD $160.00
2" 25mm 6-Element eyepiece, 74 Degree Apparent Field, 10mm eye relief, eyeshield, rubber grip, Fully Multicoated.
Speers-Waler Series4 2" 25mm eyepiece offers a wide 75 degree AFOV with superb correction. Focal length 25.0mm; Eye relief : 10mm. Elements:(6) The Series4 25mm performance: Edge field curvature (546nM): Sagittal,-0.22mm, Tangential: 0.23mm. Edge lateral color(420-656nM): 0.009mm. Chromatic focal shift (420-656nM) 0.38mm. Full performance specifications on request.
SW25S4
Data sheet
- Barrel Diameter
- 2"
- Apparent Field of View
- Wide Angle
- Focal Length
- 25 mm
2" 25mm 6-Element eyepiece, 74 Degree Apparent Field, 10mm eye relief, eyeshield, rubber grip, Fully Multicoated.