Nebula Filter S-II 2-inch 12nm spo-enabled lightweight

lightweight

You may be startled at the amazingly wide expanse of inky black sky you behold the first time you bring your eye to a 100° Series eyepiece

while the 42mm aperture ensures excellent light-gathering power—even in low-light conditions

a line filter for only the two emission lines of oxygen

Enhances the photography of emission nebulae in the city

Nebula Filter S-II 2-inch 12nm spo-enabled lightweightIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out,