Lumicon 2″ Oxygen III (OIII) Filter – Gen 3
The improved Gen 3 Lumicon 2″ OIII narrow band-pass filter lets only the two doubly ionised oxygen lines (496 and 501nm lines) from diffuse, planetary, and very faint nebulae pass through. So, against the black background of space, these faint things stand out much more. The Lumicon Oxygen III Filter gives you views of the Veil, Ring, Dumbbell, and Orion nebulas that are almost as good as a picture. Works well both when the sky is bright and when it is dark. Recommended with eyepieces that make an exit pupil of 5 mm to 7 mm. During the whole production process, the tightest quality control standards are used to make sure that your Lumicon filter stays the World’s Best. Each Lumicon Oxygen III Filter is checked by hand, and the amount of light that each of the two OIII emission lines lets through is proudly written on the filter.
Oxygen III Filter
- Narrow band pass filter (11 nm) isolates just the two doubly ionized oxygen lines (496 nm and 501 nm) emitted by planetary and extremely faint nebulae
- Produces near-photographic views of the Veil, Ring, Dumbbell, Orion, plus many other nebulae