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SVBONY Eyepieces 4mm Telescopes Lens Wide Angle 62 Degree, Bundle with SV139 1.25 inch Telescope Moon Filter

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$22.79

$ 11 .99 $11.99

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About this item

  • Focal length;0.16" 4mm;offer high magnifications;look more closely and more detailed at the moon's 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
  • Neutral Density ND Filter; giving great versatility in changing light; reduces the amount of light without effecting color balance; perfectly neutral color will not alter the natural color of the moon
  • 1.25'' barrel diameter; metal filter cell threads directly into the 1.25 inch barrel of your telescope eyepiece; useful for different caliber astronomical telescopes through which the light of the moon can be extremely overwhelming


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. SV139 1.25" Neutral Density ND filter reduces glare so you can see more lunar detail and surface features with your telescope. ND0.9 filter perfects for viewing Last Quarter Moon: 3 weeks after new; we again can see half of the illuminated part; this is usually called last quarter; Quarter Moon-a week after the new moon; when the Moon has completed about a quarter of its turn around the Earth;we can see half of the illuminated part; that is; a quarter of the Moon;this is the first quarter phase; it's very good effect to use the ND0.9 filter In this two time period.