Meade #911X O-III Nebular Filter Rear Cell Thread

Catalog description

Meade #911X O-III Nebular Filter Rear Cell Thread, part number MEAD018, is a discontinued product from the 2007–2011 catalog. It was last listed at $128.00, down from a high of $149.95.

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For observation of diffuse emission and planetary nebulae the Meade Oxygen-III (O-III) nebular filter is the clear choice. It provides an extraordinary level of nebular filtration. In fact with one of these filters you can often see more of a nebula in a light-polluted city environment than you can in a dark-sky setting without the filter.

The O-III Nebular Filter Threads onto the rear cells of Meade LX-Series mirror-lens telescopes and onto the cells of other brands of SCTs as well. Clear aperture is 36mm.

Improves detailThe filter extracts more than 80 percent of light emanating from the two oxygen-III spectral lines at 496 and 501nm. Objects such as the Omega (Swan) Nebula (M17) in Sagitarius the Orion Nebula (M42) in Orion the Helix Nebula (NGC 7293) in Aquarius and the Eagle Nebula (M16) in Serpens are revealed in dramatically increased detail. Meade 60-layer interference coating technology isolates the desirable O-III lines while nearly eliminating other spectral lines. Complements other filtersAs with Meade narrowband filters the O-III filter complements other Meade nebular filters. The effectiveness of each filter type is dependent on the light-emitting characteristics of the particular nebula being observed. However under the right conditions the O-III filter will dramatically improve your nebula-viewing experience.

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