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SVBONY 1.25" +2" CLS City Light Suppression Light Pollution Broadband Filter Suitable for Visual & Astronomical Photography

Product Description

SVBONY 1.25" CLS City Light Suppression Light Pollution Broadband Filter Suitable for Visual & Astronomical Photography Description

The SVBONY City Light Suppression broadband filter is designed to improve the visibility of various Deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purpose at sub-rural area.

Features:

  • Multi-layers anti-reflection coating
  • Non-cementing optical substrate coating
  • Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength) no deviation affected by temperature change.
  • Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.
  • Ultra-thin filter cell minimize vignetting by maximize possible
  • Aerometal Material Precise CNC Machining Sand Blasting
  • Process Black Anodized Finish Extinction Treatment to
  • Prevent Reflection Laser Engraving No Fading
  • 90% transmission of main nebula emission lines (i.e. Ha 656nm, OIII 496nm&500nm, SII672nm and H-beta 486nm).
  • 0.1% transmission of off-band, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nmand 578nm).
  • Suitable for color CCD cameras and unmodified DSLRs
  • CLS with wider pass-band than UHC and hence is more favored when observing under mild to moderate light pollution.
  • Light pollution filter do not eliminate the effects of light pollution or increase the object ' s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.
  • WARNING: The filters of SVBONY are not designed for sun observation. DO NOT LOOK AT THE SUN WITH SVBONY FILTER. You would be BLIND if you fail to observe the warning.

Specifications:

  • Brand: SVBONY
  • Type: City Light Suppression Filter (CLS Filter)
  • Material: Optical glass lens, Aluminum Frame
  • Shape: Round
  • Barrel diameter: 1.25''
  • Thread: Standard M28.5*0.6mm
  • Net Weight: 5.2g / 0.18oz

SVBONY 2" CLS City Light Suppression Light Pollution Broadband Filter Suitable for Visual & Astronomical Photography

Description

The SVBONY City Light Suppression broadband filter is designed to improve the visibility of various Deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purpose at sub-rural area.

Features:

  • Multi-layers anti-reflection coating
  • Non-cementing optical substrate coating
  • Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength) no deviation affected by temperature change.
  • Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.
  • Ultra-thin filter cell minimize vignetting by maximize possible
  • Aerometal Material Precise CNC Machining Sand Blasting
  • Process Black Anodized Finish Extinction Treatment to
  • Prevent Reflection Laser Engraving No Fading
  • 90% transmission of main nebula emission lines (i.e. Ha 656nm, OIII 496nm&500nm, SII672nm and H-beta 486nm).
  • 0.1% transmission of off-band, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nmand 578nm).
  • Suitable for color CCD cameras and unmodified DSLRs
  • CLS with wider pass-band than UHC and hence is more favored when observing under mild to moderate light pollution.
  • Light pollution filter do not eliminate the effects of light pollution or increase the object ' s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.
  • WARNING: The filters of SVBONY are not designed for sun observation. DO NOT LOOK AT THE SUN WITH SVBONY FILTER. You would be BLIND if you fail to observe the warning.

Specifications:

  • Brand: SVBONY
  • Type: City Light Suppression Filter (CLS Filter)
  • Material: Optical glass lens, Aluminum Frame
  • Shape: Round
  • Thread: Standard M48*0.75mm
  • Net Weight: 5.2g / 0.18oz

    Package Includes

    • SVBONY 1.25 inch CLS Filter
    • SVBONY 2"CLS Filter
    • 2xSturdy Plastic Case

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    4. A:Overseas Warehouse Local Dispatch

      • From US Local Dispatch: USA: 2-6 business days .
      • From AU Local Dispatch: AU:2-6 business days.

      B:Chinese Domestic Dispatch

      Country
      Delivery Time

      Working Days(not including holiday)
      5-7
      8-11
      12-14
      15-19
      20-22
      >22

      Working Days+Saturday+Sunday
      5-9
      10-15
      16-20
      21-25
      26-30
      >31

      United Kingdom
      Rate(item arrived)
      9.9%
      63.2%
      19.1%
      3.4%
      4.4%
      Refund

      Australia
      Rate(item arrived)
      21.4%
      50%
      14.3%
      7.2%
      7.1%
      Refund

      France
      Rate(item arrived)
      10.5%
      28.6%
      43.8%
      10.1%
      7%
      Refund

      Germany
      Rate(item arrived)
      11.1%
      22.2%
      30.3%
      20.9%
      15.5%
      Refund

      Canada
      Rate(item arrived)
      0%
      47.1%
      31.4%
      17.6%
      3.9%
      Refund

      Spain
      Rate(item arrived)
      3.5%
      25%
      47.9%
      12.9%
      10.7%
      Refund

    5. You can pay extra
      shipping cost to get express delivery, such as EMS, DHL or UPS. It
      just takes about 5-10 business days to receive order, please contact us if
      necessary.

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      Feedback

      PushAuction

      On Mar-29-18 at 00:11:03 PDT, seller added the following information:

      DataCaciques

      Filed under: Eyepieces & Accessories