SVBONY SV220 Telescope Filter, 2" 7nm Dual-Band Nebula Filter, Reduce Stray Light...

Capture Purer Nebula Light: SV220 2" Dual-Band Filter allows high transmission of OIII (500.7nm) and H-Alpha (656.3nm) nebula emission lines, while effectively blocking artificial light interference and skyglow Improve Image Quality: Featuring over 94% transmission and superior Out-of-band light rejection, SV220 nebula filter delivers a significant boost in image contrast and detail for deep-sky astrophotography Capture the Cosmos Downtown; use SVBONY SV220 telescope filter to enable deep-sky photography in light-polluted cities or under a full moon Crafted for Astrophotography: SV220 2" astrophotography filter is designed for color CMOS, CCD, and digital cameras, significantly reducing the difficulty and hassle of post-processing Specification: Anodized aluminum frame; Waterproof optical glass; net weight: 50g; Thread specification: M48*0.75 Suitable astronomical telescope: SVBONY SV220 narrowband filter cannot be used with smart telescopes or astronomical telescopes with a focal ratio of f/4 or less Brand SVBONY Material Aluminum, Optical Glass Photo Filter Thread Size 48 Millimeters Coating Description Multi Coating Photo Filter Effect Type Enhancing Water Resistance Level Waterproof Product Dimensions 2"L x 2"W Photo Filter Size 50.8 Millimeters Number of Items 1 Set Name SV220 7nm 2" See more SVBONY SV220 Telescope Filter, 2" 7nm Dual-Band Nebula Filter, Reduce Stray Light, H-Alpha&O-III Narrowband Filter for One-Shot Color Camera, Telescope Accessories for Deep Sky Astrophotography: Electronics