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SVBONY 2" Filter SII-CCD 7nm Narrow-Band Filter for Deep Sky 2" Mounted

Product Description

             
             
         
         
             
             
             

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The
Svbony 2" Filters are made with Schott glass that has been multi-coated
with an ion-assisted deposition technology to ensure scratch resistance
and stability on the central wavelength, or CWL. The filter cell is
made of lightweight, strong metal and is CNC machined, sand-blasted;
black anodized, and then laser engraved. The result is a super thin
filter cell that will produce a clear aperture of 45mm.
The
Sulfur II 7nm Extra Narrowband Filter transmits a 7nm bandwidth of
light that is centered at 672nm and drastically reduces other
transmissions, including wavelengths of light that are responsible for
light pollution (both artificial and natural). Like all Svbony filters
that are designated as “CCD”, this SII filter also blocks infrared
wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut
filter.

Quality Filter Materials:

  • Material from Germany, 2.0mm thick
  • CNC machined and black anodized aero-metal filter cell that
    is ultra-thin to provide largest clear aperture; Laser-engraved to
    prevent fading
  • Multiple layers of anti-reflection non-cementing coatings applied via electron-beam gun evaporation with Ion-assisted deposition

    Filter Manufacturing Processes and Parameters:

  • Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces
  • Surface quality, according to MIL-O-13830, is 60/40
  • 80% transmission at SII line 672nm
  • Infrared wavelength 700-1100nm cut-off
  • 0.1% transmission Hg at 435nm and 578nm
  • 0.1% transmission Na at 589nm
  • Thin metal cells have a clear aperture of 45mm for 2inch filters
  • Each filter comes with a plastic case with high pressure EVA case liningPackage Includes: SVBONY 2" SII 7nm Filter
        Sturdy Plastic Cases

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Svbony focus on telescope and optical accessories. Aim to supply the high quality products and best service to customers. Main items are including Telescope, Monocular, Binocular, Spotting scope, filter, eyepiece and other accessories. We hope that you could enjoy a much more clorful life by using our products.

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Svbony has set up US/AU/UK/ES/DE/IT/FR oversea warehouses, trying to offer customers speedy best local service. We are a passionate and extraodinary team, committed to offering good products and keeping customers satisfied with their purchase.

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Our goal is to make sure you are a happy customer and pleasant shopping with us.
If you are satisfied with the purchase and our total service, your comment is very important in our business success. Please take a minute to leave us a positive feedback with an overall Detailed Selling Rating (DSR) of 5
If you are not satisfied with your purchase in any way, Please give us the opportunity to resolve any problem. We understand the concerns and frustrations you might have, and will try our best to resolve the issues.

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"Contact seller' and we are committed to your 100% customer satisfaction
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