OPTOLONG L-PRO FILTER finder The USB 2

The USB 2

Especially during sandstorms which can encircle the entire planet and cover features

Vixen-Style

the rim around the generator reduces the white light disturbance (a must have in star parties where white lights are prohibited)

About 90% at 672 nm

OPTOLONG L-PRO FILTER finder The USB 2The Optolong L Pro filter is a light pollution multiband filter designed to reduce the effect of light pollution while offering a great white balance. CLS, UHC, L eNhance, L eXtreme and narrowband filters are very effective in increasing the contrast of emission nebulae but they are ineffective on deep sky objects that have a continuous spectrum such as galaxies, globular clusters and reflection nebulas. The L Pro works as a universal light pollution