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SVBONY SV220 1.25'' & 2'' Dual-Band Nebula Filter OIII &H-a 7nm for Deep Sky
The 7nm bandwidth strongly isolates the nebulae's emissions into H-Alpha (red) and OIII (green-blue) from anything else, ensuring that the shooting astronomical object is pure enough, free from non-target spectral interference. Comparing to the traditional DSO photography plan "Monochrome camera + SHO filters + Filter wheel" and long single channel exposure time and post-processing, SV220 dual-band filter simplifies the tediousness and difficulties of photography and post-processing, gaining full color images with one-shot. The SV220 filter greatly reduces the effect of light pollution and moonlight, and makes it possible to do photography in a light polluted environmental conditions, like on your balcony or in your backyard.
Meanwhile it saves your time on the road and cost on the fuel.