• UHC filters or light pollution reduction filters are designed to selectively reduce the transmission of certain wavelengths of light;especially those produced by artificial light;
• Sky background is darker;and contrast of emission nebulae are noticeably improved;the perfect filter for viewing nebula from light polluted skies;or for boosting the contrast of nebula from dark sky sites;
• Due to its ability to produce exceptionally sharp and clear images;this UHC filter is considered one of the most popular astronomy accessories;it can be used not only for celestial observations but also for astrophotography;
• 1.25'' barrel diameter simply attach to eyepiece cased in a sturdy transparent case;standard filter thread for 1.25" eyepieces and other accessories;
• Optical glass lens;aluminum frame;significantly reduces light pollution;great for city and suburban observation.

The VPL Filter has premium quality metal rim and optics glass lens . Reduce glare and increase contrast of the Moon with the Svbony 1.25”/2'' VPL Filters. Also useful for extra bright planets as well as terrestrial viewing over sand or snow. We provide you with two sizes to choose from, 1.25'' and 2''.

Note: This polarizing filter is too thick and not suitable for SV226 filter drawers. 

• SV406P 20-60X80 Angled ED Extra-Low Dispersion Dual Focus Spotting scope for Bird Watching is designed with extra-low dispersion glass to maintain color authenticity.
• Dual focus makes you to focus more precisely and give you the most perfect experience.
• BAK4 prism and FMC (Fully Multi-Coated) optics, increasing light transmission through the optical path to deliver sharp, crisp and high contrast images.
• Nitrogen-filled, completely waterproof and fogproof. You could enjoy hunting, bird watching interest even in wet weather. It is suitable for nature lovers and birdwatchers.

How to choose eyepieces suitable for SV406P