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)

    The filter allows only a 7nm bandwidth of light centered on the SII emission lines (672nm), providing high contrast and detailed views of nebulae.
    $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 primarily used for capturing and observing SII emitting nebulae and supernova remnants. By isolating the SII emission line, this filter enables astronomers and astrophotographers to see and photograph structures within nebulae that are often obscured by other wavelengths of light. This makes it an invaluable tool for anyone conducting detailed studies of these celestial phenomena.
    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"

    The Optolong SII Narrowband 6.5nm Filter is a powerful tool for any astronomer or astrophotographer looking to capture high-contrast, detailed images of the night sky. With its advanced coating technology, high transmission rates, and durable construction, this filter ensures that you can achieve stunning results in a variety of imaging scenarios. Whether you’re observing from a suburban backyard or a light-polluted urban environment, the SII filter will help you see the universe in greater detail than ever before.
    From $209.00 USD
    From $209.00 USD
  • 48296743174357

    Optolong SII Filter 2 Inch 6.5nm

    Optolong SII Filter 2 Inch 6.5nm

    The Optolong SII Filter 2 Inch 6.5nm is an essential tool for anyone serious about astronomy and astrophotography. Its ability to isolate the SII emission line and reduce light pollution makes it invaluable for capturing detailed images of deep-sky objects. With its high-quality construction and advanced features, this filter will significantly improve your stargazing and imaging experience.
    $279.00 USD
    $279.00 USD
  • ZWO 2" SII Filter 7nm

    ZWO 2" SII Filter 7nm

    ZWO 2" SII Filter 7nm

    Purchasing the ZWO 2" Narrowband SII Filter 7nm is a smart investment for any serious astronomer or astrophotographer. Its ability to isolate specific wavelengths of light and reduce the impact of light pollution makes it an essential tool for capturing stunning images of nebulae.
    $299.00 USD
    $299.00 USD