Astromania 2" O-III Filter - Bundle with - 2" 90-Degree Mirror Diagonal with 93% reflectivity

★★★★★ 4.2 74 reviews

US$53.68
Price when purchased online
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US$53.68
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 208573951 Release Date 2026/03/22 List Price US$53.68 Model Number 208573951
Category
  • The 2 inch diagonal features dielectric coatings with 93 percent reflectivity across the visible spectrum and a 1/10 wave mirror for bright and true images;
  • It fits all rear cells of Schmidt-Cassegrain telescopes equipped with a big 2 inch focuser and can use with refractor telescopes with not included SCT adapter which you can find in our store;
  • Improved attachment design features a brass clamping ring which does not mar and provides a more secure connection;
  • Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming; allowing just for the Double Ionized Oxygen lines between 496nm to 501nm to pass through at 95 percent
  • Not only useful at light-polluted sites; the contrast is also increased at dark sky sites; can be used with all 2inch eyepieces; filter made from high-grade glass with dichroic interference and antireflection coatings

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4.2 out of 5
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74 ratings | 30 reviews
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