Feature(may vary by option.)

●Focal length;0.16" 4mm;offer high magnifications;look more closely and more detailed at the moons surface and other planet; 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;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

[4mm 10mm 23mm]




[4mm]




[23mm]




[10mm]





Description

4mm eyepieces4mm eyepieces

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 didnt 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 telescopes 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

Package Include

1 X SVBONY 4mm Aspheric Eyepiece

Its a great Halloween birthday christmas gift

62-degree 62-degree
1.25 inch1.25 inch

1.25 inch

Standard 1.25" 31.75mm fitting diameter, can be used in any astronomical telescope with a 1.25" focuser.

Dust coverDust cover

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

Applicable sceneApplicable scene

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.

Specification:

Focal length: 0.16 inch / 4mm
Field of view: 62°
fitting diameter: Standard 1.25” (31.75mm)
Eye lens diameter: 0.39inch / 10mm
Coating: Optical lenses
Fully coated: High-definition
structure of optical system: Aspheric Eyepiece
Weight: 1.48oz / 0.09lb / 42g
Element: 3 Element 2 Groups

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