The approx 66 degree AFOV is perfect for broad field lunar observations;medium sized star clusters;wide range of cloudy nebulas and deep sky targets

Fully multi coated optical lens:
Broadband green film increases light permeability;make the images clearer and brighter

62 degree ultra wide field of view:
Apparent field of view offers ultra wide views of the moon;star clusters;the Milky Way

16mm long eye relief:
Awesome long eye relief and very comfortable viewing for long time

Soft fold-down rubber eye-guard:
Comfortable accurate observation;twist up and down for wear glasses or not

Solidly made construction:
Constructed with machined aluminum and stainless steel;solidly made construction

Threaded to accept 1.25" filters:
Threaded for any standard 1.25" astronomy filters;barlow lens or other astronomical devices

Multi-element design:
6mm:5-elements in 3 groups
9mm:6-elements in 4 groups
15mm:4-elements in 3 groups
20mm:5-elements in 3 groups
Delivers sharp images with good color correction and contrast

Edge-blackened optics:
Internally blackened to eliminate light scattering

Specifications:
Eyepiece series: ultra wide
Focal length: 6mm/9mm/15mm/20mm
Barrel size: 1.25" /31.7mm
Apparent field of view: 66 degree
Lens material: optical glass lenses
Filter Threads: standard 1.25" filter thread
Coating: fully multi coated broadband green
Rubber eye guard: yes

Package includes:
1xSVBONY 1.25" ultra wide 6mm eyepiece
1xSVBONY 1.25" ultra wide 9mm eyepiece
1xSVBONY 1.25" ultra wide 15mm eyepiece
1xSVBONY 1.25" ultra wide 20mm eyepiece