ZWO SII 7 nm Filter - 1.25" - SII7nm1.25

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Item #ZWOA-SII7NM1.25

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  • $129.00
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  • This 1.25" SII 7 nm Filter is mounted in a round metal cell
  • Use this filter together with the ZWO 1.25" OIII and H-Alpha filters for tri-color results similar to those achieved by the Hubble Space Telescope
  • Fine-optically polished for 1/4 wave precision
  • Multiple layers of anti-reflection coatings enhance performance even further
  • Comes with a plastic filter case for protection between uses
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  • Description

    ZWO 1.25" SII 7 nm Filter

    The ZWO SII 7nm Filter is mounted in a metal 1.25" cell and comes in a protective plastic case. ZWO narrowband filters are fine-optically polished to reach an accuracy of 1/4 wave. Their performance is further enhanced by multiple layers of anti-reflection coatings.

    Sulfur is in the deep red of the spectrum near 672 nm. When combined with H-a and OIII (Hydrogen-Alpha and Oxygen III, or double ionized oxygen) SII will produce images with colors that are reminiscent of those taken by the Hubble Space Telescope.


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    What's Included

    • ZWO SII 7 nm Filter - 1.25"
    • Plastic Filter Case

  • Dimensions & Specifications

    • Filter Size: 1.25" (31.75mm)
    • Filter Type: Narrowband Imaging - SII
    • Filter Shape: Round
    • Mounted/Unmounted: Mounted

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    2 years

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

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