Highlights
- Fully multi-coated broadband glass including aspherical lenses that increases light transmission for brighter and higher-contrast images
- The body is plastic with an aluminum drawtube and 42g weight which makes the eyepiece portable and durable
- 9mm eye relief makes you comfortable to use; 62 degree field of view is tuned to the human eye and very relaxed during observation
- Suitable for all 1.25 inch telescope and threaded for 1.25" filters
Features
The eye relief is the distance from the last surface of an eyepiece within which the user's eye can obtain the full viewing angle. 9mm eye relief is a comfortable distance to viewing.
Field of view (FoV) is the extent of the observable world that is seen at any given moment. 62 degree is most similar to field of view human eye.
Excellent workmanship
Drawtube of the eyepiece is aluminum, including a safety undercut on the lower barrel , the flocking and baffling in the drawtube as well as in good quality. A metal ring is placed around the housing itself that makes the eyepiece more aesthetically pleasing .with 2 lens caps can prevent from scratching . The eyepiece is very suitable for the beginner.
Professional optics
Svbony 4mm eyepiece adopt fully multi coated advanced technology with aspherical lenses that minimize distortion and chromatic aberration, which ensures optimal transmission of light and a bright, clear field of view. Putting you right in the middle of the starry sky when you used the eyepiece with astronomic.
Focal length: 4mm/10mm/23mm
Field of view: 62°
Barrel size: 1.25" (31.7mm)
Eye lens diameter: 0.39inch / 10mm
Eye relief diameter: 9mm
Coating: FMC
Optical material: glass
The structure of the optical system: aspheric eyepiece Weight: 1.48oz / 0.09lb / 42g