- Dual-band light pollution filter – 2-inch.
- The L-eXtreme filter is dual-band that passes H-alpha and O-iii emission lines.
- It isolates these two nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized.
- These two elements (Hydrogen and Oxygen) factor greatly in the scientific exploration of life.
DUAL-BAND LIGHT POLLUTION FILTER – 2-INCH
The advantage of the L-eXtreme filter is that there is no transmission between the H-beta and OIII lines and there are also no nebula emission lines there. In this case, it isn’t letting light pollution come through so it maximizes nebula signals and the sky background is made darker while imaging.
The L-eXtreme filter should better isolate the emission lines and better protect from light pollution.
Optolong L-eXtreme is a two 7 nm bandpass filter which can be used with one-shot color cameras like DSLR’s (digital SLR), and monochrome CCD cameras, it is also more suited for fast systems. The convenience and cost-effectiveness of this filter allows amateurs to image a rich emission nebula, even in bright, light pollution skies. Optolong believes the design of L-eXtreme filter would be a better choice for fast systems at a competitive price. It isolates the H-alpha, and Oxygen-iii nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized. For people who are living in very light-polluted areas, or when the moon is out, the L-eXtreme will be a good filter.
Unlike the L-eNhance filter which is a tri-band (transmits H-b, H-a, and O-iii), the L-eXtreme filter is dual-band that passes H-a and O-iii emission lines.