12mm Flat-Field Eyepiece

12mm Flat-Field Eyepiece


  • 12mm Focal Length
  • 1.25" Diameter Barrel
  • 60° Apparent Field of View
  • 0.1% Anti-Reflection Coated Optics
  • Five-Element Eyepiece Configuration
  • Slip-Resistant Textured Surface


Lunt Solar System's five-element 12mm Flat-Field Eyepiece removes the fuzziness and flared appearance that can often appear near the edges of conventional eyepieces to provide pin-sharp images across the entire 60° apparent field of view. The optics are multicoated with proprietary 0.1% anti-reflective coatings that reduce ghosting and glow, and aid in providing a darker background. The eyepiece fits into 1.25" focusers and accessories and features a slip-resistant textured collar for more secure handling.

  • Focal Length: 12 mm
  • Field of View: 60 degrees
  • Eye Relief: 11 mm
  • Number of Elements: 5
  • Barrel Size: 1.25″
  • Weight: 0.1Kg