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SVBONY Eyepieces 4mm Telescopes Lens Wide Angle 62 Degree Aspheric Eyepiece HD Fully Coated Lens for 1.25 inches Astronomic Telescopes


  • Focal length;0.16" 4mm;offer high magnifications;look more closely and more detailed at the moon's surface and other planet;perfect for viewing the moon and planets
  • Standard 1.25’’ 31.75mm fitting diameter;can be used in any astronomical telescope with a 1.25" focuser;Perfect for broad field lunar observations; medium sized star clusters;and a wide range of cloudy nebulas and deep sky targets
  • Fully coated optics glass eyepieces for excellent image contrast and light transmission;give maximum detail and definition across the entire field of view;highly achromatic;planetary filters enhance details on Jupiter;Saturn;Mars and Venus
  • 4mm lens only weighs 0.09lb; For lenses with the same refractive index; the 62 degree aspheric eyepiece is thinner and lighter than the spherical eyepiece;designed primarily for planetary observation;perfect for deep sky objects
  • Wide angle; 4mm 62 degree aspheric eyepiece can get maximum detail and definition across the entire field of view; Anti-lost design; Eyepiece interface recess portion can prevent the loss;Applicable;watch the scenery;bright celestial observations; nebula and so on

Product Description

SVBONY 1.25" fully coated eyepiece is perfect for broad field lunar observations medium sized star clusters and wide range of cloudy nebulas;deep sky targets

New to star gazing and didn't know what you need to satisfy your needs;here is something can help you make an educated decision;things to consider:

Make sure that you know your telescope and how to calculate the optimal magnification for the objects you wish to view;the magnification equation:

Magnification=objective focal length/eyepiece focal length

Typically,you do not want to exceed 2x per mm of your telescopes diameter or the images will be blurry;for example,your telescope's objective diameter is 80mm,The maximum magnification should not exceed 160x

So research what the best magnification is for the objects you wish to view

SVBONY 4mm focal length telescope eyepiece for observing lunar surface pits and planet surfaces

Pay attention:Don't look directly into the sun;otherwise it will burn the eyes


Focal length:0.16 inch / 4mm

Field of view: 62°Standard 1.25” (31.75mm) fitting diameter

Eye lens diameter: 0.39inch / 10mm

Coating: Optical lenses

Fully coated: High-definition

The structure of the optical system: Aspheric Eyepiece

Weight: 1.48oz / 0.09lb / 42g

Package Include

1 X SVBONY 4mm Aspheric Eyepiece

Aspheric eyepiece

The aspherical design corrects the image, solves the problem of distortion of the viewing, and makes the lens lighter, thinner and flatter,which designed primarily for planetary observation and perfect for deep sky objects

Well blackened takes in many more rays of light

Lens edges is blackened and internal extinction thread reduces scattered light even further

Dust cover

Both ends have dust caps for protecting the eyepieces.The lens covers are interchangeable and easy to use and keep in a pocket

Fully coated optical lenses

FMC glass optics increase light transmittance; Enhance details on jupiter; saturn; Mars; venus and get high achromatic images


Watch the scenery; bright celestial observations;nebula; broad field lunar observations; medium sized star clusters; cloudy nebulas and deep sky targets; viewing the moon and planet and so on


Lens Coating
Fully Multi Coated
Fully Multi Coated
Fully Multi Coated
Fully Multi Coated
Fully Multi Coated

Rubber Eye Guard

Barrel size

Focal Length

SVBONY Eyepieces 4mm Telescopes Lens Wide Angle 62 Degree Aspheric Eyepiece HD Fully Coated Lens for 1.25 inches Astronomic Telescopes


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Filed under: Eyepieces & Accessories