Description

SVBONY SV240 Multi-Narrowband Filter Galaxy & Nebula Near-infrared Light Pollution 2

SVBONY SV240 multi-bandpass filter is designed for urban astrophotography; it can isolate the Ha; OIII; and H-Beta from the background light pollution efficiently; you can astrophotography in urban without a long struggle to suburbs; save your time and high efficiency; and it is suitable for photoing most galaxies; reflection nebulae; emission nebula; and star clusters; and so on. 

Cut-off Depth ≥ OD4

Highly efficient in blocking urban light pollution or other background light; use this multi-bandpass filter for astrophotography in urban without traveling long distances to the suburbs. The SV240 narrowband filter can block the influence of urban light pollution and other background lights efficiently. 

FWHM; 24nm; 20 nm; 115 nm; the wide wavelength and high transmittance of this multi-bandpass filters in Ha; OIII; H-Beta wavelength helps the colorful image photoing.

Resistant of BORTLE 8

The multilayer coating design for the remarkable performance in tacking light pollution and high transmittance in core wavelength. Astrophotography in urban comfortable. The strong ability to tacking light pollution up to BORTLE 8 allows it can be used in multiple cities, and no need to go to the suburbs. Time and labor saving.

Wavelength Range of The Filter

The wide range allows the filter to be used in multiple scenarios. Stronger resistance to light pollution. Near IR (NIR) is blocked up to 1100nm. High ability to process the wavelength from 300 to 1100nm. Effectively isolate the light pollution band.

Photography All Kinds of Targets

The wavelength can meet the astrophotography needs of most galaxies, reflection nebulae, emission nebula, star clusters, and other broad-spectrum targets. And the targets can be captured in a short time, which is widely used and high efficiency. 

If you have different astrophotography systems, no need to prepare dedicated filters; one SV240 can meet your needs due to its high compatibility. Considering the high quantum efficiency (QE) characteristics of the latest cameras (such as IMX585 and IMX464) in the near-infrared region and also this region less susceptible to artificial light pollution, the SV240 multi-narrowband filter adds high transmission in the near-infrared (NIR) band. This spectrum design improves the image signal-to-noise ratio and contrast by capturing signal in visible bands and NIR regions while maintaining good colour balance and being easier to manage in post-processing.

 

• Cut-off depth ≥OD4; highly efficient in blocking urban light pollution or other background light; use this multi-bandpass filter for astrophotography in urban without traveling long distances to the suburbs;
• Compatible with 99% astrophotography systems; if you have different astrophotography systems, no need to prepare dedicated filters, one SV240 can meet your needs due to its high compatibility;
• Photoing more kinds of targets; SV240 multi-narrowband filter select Ha,OIII,H-Beta wavelength effectively can cover almost photoing needs;
• High transmittance; the >90% transmittance in core wavelength of Ha,OIII, H-Beta, more objects for your astrophotography by using this multi-bandpass filter;
• Multi-bandpass filters; without multiple filters combination for colorful images; rich color in your lens;
• Resistant of BORTLE 8; the multi-narrowband filters can be resistant from Bortle 1 to Bortle 8 cities, suitable for almost all urban;
• 300-1100 mm working wavelength; the wider coverage of this multi-narrowband filter allows it to have a strong ability to tack light pollution.

• Note: Optical filters that use infrared light often cause halos in the NIR region; which are exacerbated by the halos produced by the filter itself.

  Technical Specifications

  Brand		SVBONY
  Model		SV240
  Name		Multi-Narrowband Filter
  Size		2-inch
  Substrate Thickness		2mm
  Clear Aperture		44mm
  Wavelength Range		300-1100nm
  FWHM		24nm & 20nm & 115nm
  Blocking		>OD5@300-450nm；>OD4@560-620nm；>OD2>690-750nm； >OD3@940-1100nm
  Peak Transmittance		T＞95%@486.1nm；T＞92%@495.9nm；T>85%@500.7nm；T>95%@656.3nm； Tavg>95%@830-870nm
  Surface Quality		60 40
  Surface Parallelism		1 4λ
  Thread		M48x0.75
  Single Thread		Yes
  Net Weight		12.5g 0.44oz 0.027lb

  In the Box

  SVBONY SV240 Multi-Narrowband Filter Galaxy & Nebula Near-infrared Light Pollution 2

  Warranty

  SVBony s Warranty

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