This ND96 neutral density filter allows 13 percent of the visible light to pass through
2x Magnification Result: premium barlow lens provide 2x increase in magnification for allowing you look more closely and more detailed at the moon's surface and other planet during astronomical journey
Muti Coated Optics Lense: Anti reflective internal finish to maximize image contrast; optical glass lens offers better viewing without introducing additional chromatic aberration and providing high light transmission for clear view and color correction
Wide 66-deg apparent field offers expansive views of the moon; star clusters; and the Milky Way; generous 18mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view
20mm eyepiece offer wide field of view and superior performance; 5-element design deliver sharp image with good color correction and contrast; aluminum 1.25 inch barrel is internally blackened to eliminate light scattering; thread accept 1.25 inch filter