CLS:
engraving no fading CLS with wider pass-band than UHC and hence is more favored when observing under mild to moderate light pollution
Light pollution filter do not eliminate the effects of light pollution or increase the object’s brightness;
in many cases;they increase the contrast between nebula and night sky;not brightening the nebula
Warning: the filters of SVBONY are not designed for sun observation;don not look directly into the sun with SVBONY filter;otherwise it will burn the eyes
