The advantage of the L-eXtreme filter is that there is no transmission between the H-beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximize nebulas signal and make the sky background darker while imaging. The L-eXtreme filter should better isolate the emission lines only and better protect from light pollution.

• 2" ClickLock Diagonal Mirror
• Oversized 2 "dielectric lamda / 10 levels with 112mm optical length
• Mirror repels UV and IR radiation, provides high security at the solar observation in white light and with Ha-sun filters
• Scratch-resistant, hard-coated mirror surface for safe cleaning, scratch-resistant even in extreme conditions
• Baader 2" ClickLock clamp for ultrafast clamping action
• Removable 2" Safety Kerf nosepiece

The LRGB filter kit is designed for maximum contrast and with extremely high gradients for a clear differentiation of light colors

The LRGB filter kit is designed for maximum contrast and with extremely high gradients for a clear differentiation of light colors