Alstar 1.25 Inch Plossl Telescope Eyepiece Set - 4mm 10mm 20mm - Bundle with - 1.25" O-III Filter

★★★★★ 4.1 112 reviews

$82.99
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$82.99
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Free shipping Free 30-day returns

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Management number 212171896 Release Date 2026/04/06 List Price $33.20 Model Number 212171896
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  • Each Alstar 1.25 inch O III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O III emission lines
  • Not only useful at light polluted sites; the contrast is also increased at dark sky sites; can be used with all 1.25 inch eyepieces; Filter made from high grade glass with dichroic interference and antireflection coatings
  • Completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized; Increases contrast through selective filtration Anti reflection coated to prevent glaring and ghosting
  • Fully-Multicoated Achromatic Design: Featuring a 4-element Plossl optical design with an approximate 50-degree AFOV, perfect for broad field lunar observations; medium sized star clusters; provide a wide range of cloudy nebulas and deep sky targets
  • Wide Field of View : 1.25 Inch 4mm 10 mm 20 mm Plossl eyepiece offers a wide field of view and long eye relief ideal for high-precision astronomical observations

Brand A ALSTAR

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