SII Filters For Telescope

Transform your telescope into a powerful tool for deep-sky observation with our SII filters. Specifically engineered to highlight the sulfur II emission lines, these filters allow you to capture the intricate structures and hidden details of nebulae and other celestial phenomena. Perfect for both amateur and professional astronomers, our SII filters offer exceptional precision and depth. By isolating the specific wavelengths emitted by sulfur ions, these filters enhance the beauty and complexity of your night sky images, revealing features that are often invisible in broadband views.

  • ZWO SII Narrowband Filter 1.25" Inch (7nm)

    ZWO SII Narrowband Filter 1.25" Inch (7nm)

    ZWO SII Narrowband Filter 1.25" Inch (7nm)

    Investing in the ZWO SII Narrowband Filter 1.25" Inch (7nm) means achieving professional-grade astrophotography results. Its superior construction, light pollution suppression capabilities, and compatibility with a wide range of equipment make it an invaluable tool for capturing the beauty of the night sky in vivid detail.
    $179.00 USD
    $179.00 USD
  • Askar SII Narrowband (7nm) Filter 2" / 1.25" / 36mm / 31mm

    Askar SII Narrowband (7nm) Filter 2" / 1.25" / 36mm / 31mm

    Askar SII Narrowband (7nm) Filter 2" / 1.25" / 36mm / 31mm

    The Askar SII Narrowband (7nm) Filter is an essential tool for anyone serious about astronomical observation and astrophotography. Its ability to isolate specific wavelengths and reduce light pollution impact makes it invaluable for capturing stunning images of deep-sky objects. Don't miss the opportunity to add this high-quality filter to your astronomical toolkit.
    From $199.00 USD
    From $199.00 USD
  • 48298393108693|48298393141461

    Optolong SII Narrowband 6.5nm Filter 2" / 1.25"

    Optolong SII Narrowband 6.5nm Filter 2" / 1.25"

    6.5nm bandwidth centered at 672nm, isolating SII emissions while blocking out unwanted light. 80% transmission at the 672nm SII line, ensuring bright and detailed images.
    From $209.00 USD
    From $209.00 USD
  • 48296743174357

    Optolong SII Filter 2 Inch 6.5nm

    Optolong SII Filter 2 Inch 6.5nm

    Blocks infrared wavelengths from 700nm to 1100nm, eliminating the need for a separate IR-Cut filter. Precision Polishing: The filter substrate is fine-optically polished to 1/4 wave with less than 30 parallelism over both surfaces, ensuring superior image quality. Made from Schott B260 substrate material, the filter is 2.0mm thick, providing durability and reliability.
    $279.00 USD
    $279.00 USD
  • ZWO 2" SII Filter 7nm

    ZWO 2" SII Filter 7nm

    ZWO 2" SII Filter 7nm

    Perfect for capturing detailed and high-contrast images of emission nebulae. Essential for taking stunning astrophotographs that highlight the intricate structures of celestial objects.
    $299.00 USD
    $299.00 USD