Optolong L-Synergy Dual-Band Narrow Band Filter 2" Mounted (OPT-L-SYNERGY-2)
AS100368
Optolong L-Synergy Dual-Band Narrow Band Filter 2" Mounted (OPT-L-SYNERGY-2)
AS100368
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Product Description
L-Synergy is a dual 7nm narrowband filter compatible with DSLR cameras, color CMOS sensors, and CCD cameras, supporting telescope systems with F-ratio of F3.3 or above (slower system). Its key advantage lies in enabling astrophotography amateurs to capture exceptionally detailed emission nebulae even in light-polluted environments. After years of technical refinement, it has been optimized to minimize bright star halos while isolating all emission lines except SII and OIII, achieving maximum effective transmission.
Product Advantages
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.
Design Philosophy
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 tailored for color camera users. 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.
Spectrum and Characteristic
By analyzing the spectral characteristics of both celestial emission lines and light pollution, L-Synergy selectively preserves the SII and OIII nebula colors while filtering out the majority of light pollution. Specifically designed and optically optimized, L-Synergy maintains consistently high transmission across both SII and OIII bands. This ensures users can precisely capture the target nebula emissions, delivering optimal astrophotography results.
- Substrate: B270
- Thickness: 1.85mm
- FWHM: SII 7nm / OIII 7nm
- Tpeak: T>85%
- Blocking range: 300-1050nm
- Surface quality: 60/40
- Transmitted Wavefront RMS: λ/4
- Parallelism: 30s
Warm Prompt
- Regarding Color: Due to environmental lighting, display color variations, and flash photography, the product's color may differ slightly. Please refer to the actual product for the most accurate representation.
- Regarding Coating: The interference filter may display different colors under varying lighting conditions, which is normal. Please refer to the actual product for the most accurate representation.
- Regarding Design: To improve the product, design, appearance, or specifications may be subject to changes that are not immediately reflected in updates. Please refer to the actual
product for the most accurate representation. - Regarding Description: This product series shares the same materials, craftsmanship, and design—only the sizes vary.
What's in the Box
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