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  3. Orion 5584 2-Inch Hydrogen-Beta Nebula Eyepiece Filter

Orion 5584 2-Inch Hydrogen-Beta Nebula Eyepiece Filter


  • An excellent eyepiece filter for viewing faint and elusive nebulas such as the Horsehead, California, and Cocoon Nebulas
  • Selective band-pass eyepiece filter transmits only the hydrogen-beta wavelength of light these faint nebulas emit
  • Allows you to observe celestial targets that are considered trophies of visual astronomy
  • Best used with a moderate to large aperture telescopes under clear, dark skies with good seeing conditions
  • Metal filter cell threaded to fit 2" Orion eyepieces and telescope diagonal barrels

$129.99
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