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

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

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SVBONY SV132 1.25'' H-Beta 25nm Light Pollution Filter (W9102A) - Astronomy Plus

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

Regular price $40.06
Regular price $40.06 Sale price $52.03
SAVE 23% Sold out
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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



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 

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