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Small black 1.25 inch eyepiece barrel with knurled grip and rubber eyecup

PENTAX

PENTAX SMC XW 3.5mm Eyepiece 1.25" 70° 20mm eye relief

SKU CH-TZ1M-PPQD9

A 1.25" eyepiece for spotting scopes and telescopes offering 70° field of view and 20mm eye relief

  • 70° field of view gives immersive wide-angle vistas
  • 20 mm eye relief ensures comfort during long sessions
  • 5 mm focal length delivers high magnification detail
  • Low-dispersion lanthanum glass with multicoatings produces bright, crisp images
  • Eight-element, five-group optical design minimises distortion across the view

Pentax SMC XW 3.5mm Eyepiece

The Pentax SMC XW 3.5mm Eyepiece is a high-quality optical accessory designed for astronomers and terrestrial observers seeking exceptional clarity. It fits 1.25" focusers on a wide range of spotting scopes, including PF-65, PF-80, and PF-100 series models. The eyepiece features an eight-element, five-group lens configuration using low-dispersion lanthanum glass with multicoatings.

Wide 70-Degree Field and Eye Relief

This eyepiece integrates into any setup accepting 1.25" barrels, freeing users from narrower standard views. Its generous 20mm eye relief provides comfortable viewing for extended sessions, accommodating eyeglass wearers without vignetting. The weatherproof construction ensures reliability across varying outdoor conditions during astronomy or nature observation.

High Magnification With Comfort Limits

The 3.5mm focal length delivers high magnification suitable for detailed planetary or lunar study and distant terrestrial subjects. The 70-degree apparent field offers immersive wide-angle perspectives for expansive landscapes. Observers requiring longer focal lengths for wider true fields or lower power will need additional eyepieces to cover those ranges.

Highlights

  • 70° field of view gives immersive wide-angle vistas
  • 20 mm eye relief ensures comfort during long sessions
  • 5 mm focal length delivers high magnification detail
  • Low-dispersion lanthanum glass with multicoatings produces bright, crisp images
  • Eight-element, five-group optical design minimises distortion across the view

Specifications

BrandPENTAX

Questions about this item

How much eye relief does the 3.5mm eyepiece provide for extended sessions?

The eyepiece offers 20mm eye relief, giving comfortable viewing for long periods even with glasses.

Does the eyepiece fog or overheat during all-day outdoor use?

It is weatherproof sealed and has no internal electronics, so it will not fog or overheat during continuous use.

Which spotting scopes accept this 1.25" eyepiece without an adapter?

It fits directly into Pentax PF-65, PF-65 ED II, PF-80 and PF-100 series scopes and any 1.25" telescope focuser.

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