William Optics 9mm Swan Eyepiece - 1.25"
William Optics 9mm SWAN Eyepiece
The William Optics SWAN 9mm Eyepiece has soft roll down rubber eyecups for eyeglass use. They can be used for all types of observing, with all telescope types, but they are recommended for use with focal ratios up to f/6 and above. Dust caps are provided for both ends of each eyepiece. A soft protective drawstring-equipped velvet storage bag is standard equipment with each.
This 5-element super-wide angle 9mm SWAN EPƒ???????????s panoramic views at 72 deg. F.O.V. will leave you speechless!
William Optics 9mm SWAN Eyepiece Features
- Fully Multicoated lenses for excellent transmittance..
- Reduced chromatic aberration.
- Improved sharpness and contrast throughout the field.
- No internal reflections, kidney beaning, pin-cushion or other distortions.
- Smooth design for no hook up in your focuser.
- Threaded for filter usage.
- Rubber grip ring for safe, comfortable handling.
|Dust Caps Included||Yes|
|Eye Guard Included||Yes|
|Eyepiece Apparent FOV||72 degrees|
|Eyepiece Eye Relief||12mm|
|Lens Elements & Groups||5 elements & 4 groups|
|Model||William Optics Swan|
|Optical Design||Wide Angle|
|Warranty||2 Year Warranty|