Please note: This text was taken directly from the manufacturer.
Photograph Nebulas in a New Light, Even With a Full MoonOxygen-III (O-III) Extra-Narrowband Imaging FilterThe O-III filter passes light at the 500.7nm wavelength (the Oxygen-III line) with very high 90 percent transmission and a bandpass of 7nm. It complements the Orion H-alpha (5587) and Sulfur-II (5579) extra-narrowband filters, which together allow advanced tricolor imaging of emission nebulas with the StarShoot Deep Space Monochrome CCD Imaging Camera or other monochrome CCD cameras.So if you're ready to go beyond RGB imaging and capture your favorite nebulas in a revealing new light - no matter how light-polluted your skies -- add our O-III (and S-II and H-alpha) Extra-Narrowband filter to your imaging arsenal! Includes protective plastic case.
