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SVBONY SV132 1.25 H-Beta 25nm Light Pollution Filter (W9102A) For Discount

Original price was: $74.00.Current price is: $37.00.
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16 - 23 Mar, 2025
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Description

SVBONY SV132 1.25 H-Beta 25nm Light Pollution Filter

  • SV132 H-Beta eyepiece filter makes it possible to view the elusive Horsehead, California, and Cocoon Nebulas in dark skies;Great used with a moderate to large aperture telescope and clear dark skies
  • Optical high precision double side polishing; Filter substrate is fine-optically polished to 1 4 wave and <30 parallelism over both surfaces; Avoid halos
  • Precision double-sided optical coatings improve transmission and cut-off depth; Executes with a transmission of over 90% and completely rejects light pollution
  • High value transmission of pass-band and optical density of off-band is assured through planetary rotation system, a homogenous and precise coating procedure; The high optical quality of SV132 filters guarantees no loss in sharpness or contrast
  • Filter with metal mount 1.25 filter threads; Threaded to fit 1.25 eyepieces and threaded diagonal barrels
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      1. Each Svbony filter has an ultra hard, vacuum-deposited coating carefully designed to observe the Orion Horsehead Nebula and the California Nebula, which are difficult to capture. This eliminates the un-natural colored halos surrounding bright stars common with H-Beta filters of less sophisticated coating technology

      2. The 1.25 Svbony H-Beta filters suitable for viewing bright nebulae, and matching with large-aperture telescopes to observe linear spectrum nebulae,such as the M42 Orion Nebula under severe light pollution, emission nebulae, planetary stars & supernova remnants

      3. Suitable for viewing on the faint and elusive Horsehead Nebula and California Nebula

      Technical Specifications 

      Model

      W9102A

      Size 

      1.25

      Thread Size

      M28.5*0.6

      Blocking area

      400-700nm

      Transmittance

      80% at 486nm

      Transmission Hg

      0.1% at 435nm and 578nm

      Transmission Na

      0.1% at 589nm

      FWHM

      25±3nm

      Thickness

      1.85mm

      In the Box 

      1.25 H-Beta 25nm Light Pollution Filter

      Manuals & Warranty

      Svbony 1-Year Warranty 

      Title

      Default Title

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