7.2mm – 21.5mm Zoom Eyepiece

7.2mm – 21.5mm Zoom Eyepiece

FEATURES:

  • 7.2-21.5 Focal Length
  • 1.25" Diameter Barrel
  • 53-40° Apparent Field of View
  • 0.1% Anti-Reflection Coated Optics
  • Seven Lenses in Four Groups
  • Easy-Grip Zoom Collar

DESCRIPTION:

When you're out for a quick observation session or want to travel light, Lunt Solar System's 7.2-21.5mm Flat-Field Zoom Eyepiece gives you a wide choice of focal lengths in a single zoom design.

A simple textured collar enables fast transition from a low-magnification focal length of 21.5mm to a high of 7.2mm. The flat-field design, seven lenses in four groups, removes the fuzziness and flared appearance that can often appear near the edges of conventional eyepieces to provide pin-sharp images across the entire 40-53° 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.

  • Focal length: 7.2 mm – 21.5 mm
  • Barrel size: 1.25″
  • Diameter: 47 mm
  • Height: 82 mm
  • Eye relief: 15 mm
  • Lenses / Groups: 7 lenses / 4 Groups
  • Field of View: 7.2 mm – 53° – 21.5 mm – 40°
  • Weight: 0.3 Kg