Nebula Filter Oxygen III 2-inch 6.5nm
We are introducing this High-quality and functional Nebula Filter Oxygen III 2-inch 6.5nm. Additional to the air turbulence, The greatest obstacle to observing faint objects beyond the solar system is the brightening of the night sky. The atmosphere in human settlements is no longer appropriately black because of the street lights and another artificial lighting. The contrast and so the perception of the deep-sky objects also suffer. Nonetheless, depending on the type of celestial object, part of the interfering light can be filtered out, making it easier to photograph the things.
The O-III filter by Explore Scientific uses the property of the so-called emission mist. Those objects' "so-called emission lines" glow in specific colors, and the emission lines are linked to particular chemical elements, "oxygen." This filter by Explore Scientific blocks all other stains (about all artificial lights) and over the emission lines of the oxygen by oneself. The effect is impressive: Suddenly, fog becomes visible in places that appear utterly empty without a filter. In a slightly brightened sky, the Cirrus Nebula NGC 6992 is practically invisible with a 200 mm telescope. When using this filter, you can see the fog and its structures without any problems—a must for astrophotography and every amateur visual astronomer.
The Explore Scientific mist filters are equipped with an individual test report to ensure that you receive high-quality filters. Even under difficult city conditions or makes them visible in the first place, The narrow pass range of this filter of only 6.5 nm bandwidth works out the weakly glowing emission nebulae. Eyepiece holder plug diameter:50.8 mm, Buy to see it for yourself and add it to your cart now!