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Optolong L-Synergy 7nm SII/OIII Dual Narrowband Filter

Optolong L-Synergy 7nm SII/OIII Dual Narrowband Filter

par Optolong
UGC OPT-LSYNERGY
CA$432.00 - CA$432.00
CA$432.00
CA$432.00 - CA$432.00
CA$432.00
Égalisation de prix!
  • Captures Sulfur-II and Oxygen-III Emission Lines Simultaneously
  • Engineered for Hubble Palette (SHO) Imaging with Color Cameras
  • Strict 7nm Bandpass for High-Contrast Views in Light Pollution
  • Designed to Complement Standard Ha/OIII Dual-Band Filters
  • Ion-Assisted Coatings for Durability and Wavelength Stability
3 en stock
Admissible à la livraison GRATUITE au Canada pour les commandes de plus de 500$.
  • Description
  • FAQ
  • Warranty

  • Optolong L-Synergy 7nm SII/OIII Dual Narrowband Filter

    The Optolong L-Synergy 7nm SII/OIII Dual Narrowband Filter is a specialized tool designed to unlock Hubble Palette (SHO) astrophotography for color camera users. By isolating the Sulfur-II and Oxygen-III emission lines within a tight 7nm bandpass, this filter captures the two signals that standard dual-band filters miss. When combined with data from a traditional Ha/OIII filter, the L-Synergy enables you to produce full three-channel narrowband images without investing in a monochrome camera and filter wheel.

    The L-Synergy Concept: SHO Imaging with a 7nm Color Camera Filter

    Traditional SHO imaging requires a monochrome camera and three separate filters for Hydrogen-alpha, Sulfur-II, and Oxygen-III. The L-Synergy filter provides a more accessible path by targeting the missing data for a one-shot-color sensor. Paired with an existing Ha/OIII filter, this 7nm SII/OIII filter completes the dataset, allowing you to separate and process all three signals to create vibrant Hubble Palette composites.

    This dual-filter strategy dramatically simplifies both the hardware required and the post-processing workflow. By capturing strong, distinct signal for both SII and OIII, the raw data is cleaner and requires less aggressive stretching or gradient removal, leading to a more natural final image with minimal effort.

    Isolating Sulfur and Oxygen: A 7nm Bandpass for Maximum Contrast

    The filter's strict 7nm bandpass is the key to its high-contrast imaging. This narrow window transmits nearly all light from the targeted SII and OIII emission lines while aggressively blocking out light pollution, moonlight, and airglow. This selective transmission results in a significantly darker sky background, making faint nebular structures stand out with enhanced detail and signal-to-noise ratio, even from urban or suburban locations.

    Ion-Assisted Deposition Coatings for Wavelength Stability

    Optolong utilizes an advanced ion-assisted deposition coating process to manufacture the L-Synergy filter. This technique produces a hard, scratch-resistant surface and ensures the central wavelength of the filter does not shift due to temperature changes during an imaging session. This stability guarantees that your filter consistently captures the intended emission lines, preventing signal loss and maintaining color fidelity throughout the night.

    L-Synergy Method vs. Traditional Monochrome SHO Imaging

    Choosing an imaging strategy involves trade-offs between cost, complexity, and ultimate signal purity. The L-Synergy method offers a compelling alternative to a full monochrome setup.

    • Monochrome SHO Advantage: A monochrome camera with dedicated filters offers the highest possible resolution and signal sensitivity, as it avoids the light loss inherent in a color camera's Bayer matrix. It remains the gold standard for scientific-grade data.
    • L-Synergy Advantage: This method delivers results that are comparable to monochrome for a fraction of the cost and complexity. It allows you to use your existing DSLR or color CMOS camera, avoiding the need for a new camera, electronic filter wheel, and a full set of narrowband filters.

  • How does the Optolong L-Synergy filter create Hubble Palette images with a color camera?

    The L-Synergy filter captures the Sulfur-II (SII) and Oxygen-III (OIII) signals. You use it in conjunction with a separate Ha/OIII filter. By combining the data from both filters, you can isolate the Ha, SII, and OIII channels in post-processing and assign them to the Red, Green, and Blue channels of a final image to create the classic SHO Hubble Palette.

    What other filter do I need to use with the Optolong L-Synergy?

    To capture a complete SHO dataset, you need to pair the L-Synergy (SII/OIII) filter with a standard dual-band filter that captures Hydrogen-alpha (Ha) and Oxygen-III (OIII), such as the Optolong L-eNhance or L-eXtreme.

    Will the Optolong L-Synergy 7nm filter work well with my fast telescope?

    This filter is optimized for telescope systems with focal ratios of f/3.3 and slower. Using it with faster optical systems (e.g., f/2) may cause a shift in the filter's bandpass, leading to reduced signal transmission and a potential loss of performance. For the best results, it should be used within its recommended focal ratio range.

    How does the Optolong L-Synergy filter improve imaging from a light-polluted city?

    The filter's tight 7nm bandpass blocks out the broad-spectrum light common to urban light pollution (like sodium and mercury vapor lamps) and natural skyglow. It only allows the specific light from emission nebulae to pass through, dramatically increasing contrast and revealing faint details that would otherwise be washed out.

    Can I use the Optolong L-Synergy to image the Wolf-Rayet nebula WR134?

    Yes, absolutely. WR134 in Cygnus is an excellent target for the L-Synergy filter because its expanding shell is extremely rich in Oxygen-III, with some Sulfur-II signal as well. This filter is ideal for capturing the intricate blue-green arc of OIII that defines this object, which is often faint with other filter types.

    How would the Optolong L-Synergy perform on the Heart Nebula (IC 1805)?

    The Heart Nebula is another prime target. While known for its strong Hydrogen-alpha signal (which you'd capture with an Ha/OIII filter), it also contains significant regions of Sulfur-II and Oxygen-III. The L-Synergy filter will capture the data needed to add the golden hues of SII and the teal tones of OIII, transforming the typically red nebula into a full, multi-colored Hubble Palette image.

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