L2 Dual-Combo Filter Set (L-eXtreme + L-Synergy)
The L2 Dual-Combo Set includes two premium dual-narrowband filters engineered to unlock advanced narrowband and Hubble Palette imaging with color cameras. This set combines the L-eXtreme and L-Synergy filters to deliver high transmission, strong light-pollution rejection, and exceptional flexibility—without the cost or complexity of a full monochrome SHO system.
L-eXtreme — OIII & Hα Dual-Narrowband Filter
The L-eXtreme is a dual-narrowband filter designed to exclusively transmit the key nebular emission lines of
OIII (500.7nm) and Hα (656.3nm), each with a 7nm bandwidth.
By effectively blocking all other wavelengths and light-pollution emission lines, the L-eXtreme ensures that only pure OIII and Hα signals are recorded during imaging, achieving maximum effective transmission and high contrast.
Years of optical and coating refinement have significantly optimized bright-star halo suppression, resulting in cleaner data and improved performance under light-polluted skies.
L-Synergy — OIII & SII Dual-Narrowband Filter
The L-Synergy is a dual-narrowband filter engineered to deliver high transmission for the
OIII (500.7nm) and SII (672.4nm) spectral lines, each with a 7nm bandwidth.
With exceptional out-of-band rejection, the L-Synergy effectively blocks all other wavelengths and light-pollution emission lines, ensuring that only true OIII and SII signals reach the camera sensor.
Advanced coating technology minimizes bright-star halos, producing refined, high-contrast results ideal for deep-sky astrophotography.
Designed for Hubble Palette Imaging with Color Cameras
The L2 Dual-Combo Set is specifically engineered to enable Hubble Palette (SHO) imaging for color camera users,
supporting telescope systems as fast as f/3.3 and slower.
This two-filter solution combines OIII & Hα (L-eXtreme) with OIII & SII (L-Synergy), breaking the traditional limitations of narrowband imaging with color cameras.
Advanced Narrowband Imaging Without Added Complexity
By eliminating the need for a monochrome camera or an expensive three-filter SHO setup, the L2 Dual-Combo Set allows astrophotographers to achieve Hubble-style color mapping at a fraction of the cost and workflow complexity.
This streamlined filter combination preserves the advantages of color cameras while expanding creative possibilities in deep-sky astrophotography, from detailed nebular structures to expressive scientific color renditions.
