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William Optics 1.25" & 2" 110° XWA Extreme Wide Angle Eyepiece - 3.5mm

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Brand William Optics
Part Number E-XWA035
Availability available

Product Info

Manufacturer Description

New from William Optics

  • William Optics 3.5mm 110-deg Extreme Wide Angle (XWA) eyepiece
  • Dual 1.25" and 2" barrel format
  • Comfortable 15mm eye relief
  • Twist-up eyecup
  • Fully multi-coated optics (8 elements in 6 groups) with blackened lens edges
  • Made in Taiwan from Taiwanese, Chinese, and Japanese components
  • 1.25" eyepiece with 2" sleeve. 2" barrel uses a unique / innovative male 1.25" filter thread on the inside to connect to the female filter thread on the 1.25" barrel.


  • Weight: 
    • 1.25" eyepiece: 1lb-4.8oz
    • 2" sleeve: 2.3oz
    • 2" eyepiece: 1lb-7.2oz
  • Height:
    • 1.25" eyepiece (with eyeguard recessed): 165mm (6.50")
    • 2" eyepiece (with eyeguard recessed): 168.5mm (6.63")
    • Eyeguard can extend by: 7.5mm (0.3")
  • Maximum width (excluding end caps): 65mm (2.56")


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Apparent Field of View 110°
Barrel Size 1.25" (31.7mm) and 2" (50.8mm)
Bolt Case Included Yes - Free Agena Eyepiece Container
Bolt Case Size Agena 65x120mm
Coatings Fully Multi-Coated
Height (with Eye Guard) See item description
Max Width 65mm
End Caps 3
Eye Lens Diameter Xmm
Eye Relief by Design 15mm
Filter Threads Standard 1.25" (M28.5 x 0.6) and 2" (M48 x 0.75) Filter Thread
Focal Length 3.50mm
Lens Elements 8
Lens Groups 6
Rubber Eye Guard Twist-up Eyecup
Blackened Lens Edges Yes
Manufacturer William Optics
Eyepiece Focal Length 5mm and Under
Eyepiece Field of View Over 80 degrees
Eyepiece Series William Optics XWA
Barrel Type With safety undercut
Eyepiece Weight 23.20oz (657.71g)