Description
Optical glass lens;aluminum frame;significantly reduces light pollution;great for city and suburban observation. 1.25” barrel diameter simply attach to eyepiece cased in a sturdy transparent case;standard filter thread for 1.25″ eyepieces and other accessories. 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. 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. 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.Water Resistance Level: Not Water Resistant. Photo Filter Effect Type: Enhancing. Photo Filter Thread Size: 31.75 Millimeters. Material: Optical Glass, Aluminum. Brand: SVBONY. Country of Origin: China. Manufacturer: SVBONY. Date First Available: March 20, 2017. Is Discontinued By Manufacturer: No. Best Sellers Rank: #5 in Telescope Filters. Customer Reviews: 4.4 out of 5 stars523 ratings4.4 out of 5 stars. Item model number: FAUF9131A. : B06XKRSH6X. Item Weight: 0.634 ounces. Product Dimensions: 3.15 x 3.15 x 0.79 inches.
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