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Optolong L-Extreme + L-Synergy L2 Dual-Combo Filter Set - 2"

Optolong L-Extreme + L-Synergy L2 Dual-Combo Filter Set - 2"

by Optolong
SKU OPT-L2-COMBO
CA$796.00 - CA$796.00
CA$796.00
CA$796.00 - CA$796.00
CA$796.00
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  • Includes L-eXtreme (H-alpha + OIII) and L-Synergy (SII + OIII) filters
  • Enables Hubble Palette (SHO) imaging with one-shot color cameras
  • Captures three key nebula emission bands across two filters
  • Designed for modern, fast focal ratio telescope systems
  • Advanced ion-assisted coatings suppress halos and light pollution
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  • Description
  • FAQ
  • Warranty

  • Optolong L-Extreme + L-Synergy L2 Dual-Combo Filter Set - 2"

    The Optolong L-Extreme + L-Synergy L2 Dual-Combo Filter Set is engineered to bring Hubble Palette imaging to one-shot color cameras, eliminating the need for a monochrome setup. This set combines the L-eXtreme (H-alpha and OIII) and L-Synergy (SII and OIII) dual-narrowband filters to isolate the three most important emission lines in deep-sky astrophotography. By capturing this data over two imaging sessions instead of one, you can create full SHO composite images with the operational simplicity of your existing color camera.

    Unlocking the Hubble Palette for Color Cameras with the Optolong L2 Set

    Historically, creating SHO "Hubble Palette" images required a monochrome camera, a filter wheel, and three separate narrowband filters—a costly and complex setup. The Optolong L2 Dual-Combo set breaks this barrier by intelligently pairing two dual-bandpass filters, allowing your color camera to collect all the necessary data to assemble a full SHO image, from the hydrogen greens of the North American Nebula (NGC 7000) to the sulfur reds of the Pelican Nebula (IC 5070).

    The L-eXtreme Filter: Capturing Ha and OIII in a Single Frame

    The first filter in the set is the renowned L-eXtreme, which isolates the Hydrogen-alpha and Oxygen-III emission lines. These two signals represent the most dominant wavelengths in most emission nebulae. The filter transmits these specific bands while aggressively blocking light pollution and other unwanted signals, ensuring maximum contrast and signal-to-noise ratio for the H-alpha and OIII data channels in your final image.

    The L-Synergy Filter: Adding the Critical SII Signal for SHO

    The L-Synergy filter completes the trio by isolating the Sulfur-II and Oxygen-III emission lines. While you capture OIII data with both filters, the L-Synergy's primary role is to gather the crucial SII signal, which forms the red channel in a traditional Hubble Palette. This filter provides the final piece of the puzzle, enabling a three-channel color mapping (SII=Red, Ha=Green, OIII=Blue) from data captured with just two filters.

    Optolong L2 Dual-Combo vs. Monochrome SHO: A Simpler Workflow

    For imagers who want SHO results without the expense and learning curve of a monochrome system, the L2 Dual-Combo set is the direct solution. A monochrome setup's advantage is its ultimate control over data, but it requires more accessories, longer total integration times, and complex processing. The L2 set preserves the simplicity of color imaging—fewer cables, no filter wheel, and a more streamlined workflow—while delivering access to the same creative color palette previously reserved for mono users.

    Advanced Coatings for High-Contrast, Halo-Free Results

    Both filters in the L2 set are manufactured using an ion-assisted deposition coating process. This technology ensures the filter coatings are physically durable, resistant to scratching, and stable against temperature shifts that can cause other filters to drift off-wavelength. The result is precise, consistent bandpass performance and excellent suppression of halos around bright stars, yielding clean, high-contrast data ready for processing.

  • How does the Optolong L2 Dual-Combo Set create a Hubble Palette image with a color camera?

    The set allows you to capture all three essential narrowband channels (H-alpha, OIII, and SII) using a one-shot color camera. You use the L-eXtreme filter to capture Ha and OIII data, then the L-Synergy filter to capture SII and OIII data. In processing, you separate the color channels from both data sets to isolate the individual signals and then combine them into an SHO (SII=Red, Ha=Green, OIII=Blue) image.

    What is the imaging process for the L2 Dual-Combo filters with my 8" f/4 Newtonian?

    The process involves two separate imaging sessions on the same target. First, install the L-eXtreme filter and capture a series of sub-exposures. On a subsequent night (or after the first session), swap to the L-Synergy filter and capture another series of subs with similar total integration time. Because the set is designed for fast optical systems like your f/4 Newtonian, you can gather significant signal efficiently.

    Will the Optolong L2 filters work well with my fast refractor?

    Yes, this filter set is specifically designed to perform well with fast telescope systems. The coatings and bandpass characteristics are engineered to maintain signal integrity and minimize artifacts even at steep light cones, making them an excellent match for modern fast refractors and astrographs.

    What is the main advantage of the Optolong L2 set over using a monochrome camera?

    The primary advantage is cost and simplicity. The L2 Dual-Combo set allows you to achieve SHO imaging without purchasing a separate monochrome camera, an electronic filter wheel, and a full set of LRGB and SHO filters. It leverages the color camera you already own, resulting in a much lower barrier to entry for creating Hubble Palette images.

    How do I combine the data from the L-eXtreme and L-Synergy filters?

    After calibrating and stacking your images from each filter separately, you will have two master files. Using software like PixInsight or Siril, you can split the RGB channels of each master. The red channel from the L-eXtreme data becomes your H-alpha. The red channel from the L-Synergy data becomes your SII. The blue/green channels from either can be used for your OIII, often by combining them for better signal. You then assign these three extracted grayscale images to the R, G, and B channels of a new color image.

    Do these Optolong filters help reduce halos around bright stars?

    Yes. Both the L-eXtreme and L-Synergy filters are manufactured with advanced coating techniques that significantly suppress internal reflections. This technology is optimized to minimize the bright, distracting halos that can appear around high-magnitude stars in long narrowband exposures.

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