The core innovation of L-Synergy filters lies not in a single functional breakthrough, but rather in the precise combination of traditional dual-narrowband (Ha & OIII) technology—specifically designed for color Astronomy cameras. By adopting a dual-filter setup of „Ha & OIII + SII & OIII“, it overcomes the inherent limitations of color cameras in narrowband astrophotography. With L-Synergy, users can achieve Hubble Palette-style deep-sky images comparable to those captured by monochrome SHO (SII/Ha/OIII) systems—without switching to a monochrome camera or purchasing additional SHO filters.
This solution delivers high-quality results with minimal investment, making professional-level narrowband imaging accessible to all.
Optolong L-Synergy is a dual 7nm narrowband filter compatible with DSLR cameras, color CMOS sensors, and CCD cameras, supporting telescope systems with an F-ratio of F3.3 or above (i.e slower systems）. Its key advantage lies in enabling astrophotographers to capture exceptionally detailed emission nebulae even in light-polluted environments.
The Optolong L-Synergy’s advantage lies in its selective transmission of only the nebula emission lines OIII (500.7nm) and SII (672.4nm), while blocking all other light-polluting emission lines. This ensures that only the signals from oxygen and sulfur elements are captured during imaging, resulting in a darker sky background and significantly enhanced contrast and signal-to-noise ratio (SNR) between nebulae.
Even in heavily light-polluted areas, this filter selectively transmits nebula emission lines while filtering out light pollution, ultimately eliminating its impact on astrophotography.
Key Features:
- 2″ low-profile filter holder suitable for filter drawers and filter wheels – with M48x0.75 filter thread.
- The filter has a very narrow bandwidth of only 7 nm at O-III and S-II and ensures very high contrast.
- Suitable for telescopes from F3.3 and slower.
- Areas of light pollution are completely blocked, making successful deep-sky photography possible even near cities.
- Best possible anti-reflection coating to prevent halos around stars.
- The filter is suitable for mono and color cameras.
- Delivered in sturdy plastic packaging.
Spec:
- Filter size: 2″ mounted
- Mount height: 5mm without external thread, 7mm with M48 thread
- Substrate: High-quality optical glass (Schott)
- Surface: Finely polished
- Filter type: Dual bandpass filter
- Transmission ranges: O-III and S-II – 7 nm bandwidth
- Filter thickness: 2mm
Whats included:
- Optolong 2″ L-Synergy Filter
- Protective box, foam lined
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