Celestron Oxygen III Narrowband Filter - 1.25"

The Celestron Oxygen III Narrowband Filter - 1.25" is a specialized tool for astrophotographers and astronomers, designed to enhance the observation and imaging of planetary and emission nebulae. This filter precisely isolates the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by these nebulae, effectively blocking out other parts of the light spectrum. This selective isolation results in a striking contrast between the deep blackness of the sky and the faint OIII light, bringing out intricate details in notable nebulae such as the Veil, Ring, Dumbbell, Crescent, and Orion.

The filter features an advanced, ultra-hard, vacuum-deposited coating, meticulously engineered to block the entire visual spectrum ranging from 400 to 700nm. This technology is crucial in eliminating the unnatural colored halos that typically surround bright stars when using less sophisticated OIII filters. The result is a clearer and more natural view of celestial objects, enhancing both the quality and experience of astronomical observations and photography.