• SVBONY SV220 1.25" Dual Band Nebula Filter for Astrophotography — Boost Contrast on Nebulae in OSC Cameras
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SVBONY SV220 1.25" Dual Band Nebula Filter for Astrophotography — Boost Contrast on Nebulae in OSC Cameras

SVBONY SV220 1.25" Dual Band Nebula Filter for Astrophotography — Boost Contrast on Nebulae in OSC Cameras

$67.99
$67.99
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The SVBONY SV220 1.25-inch dual-band filter boosts nebula contrast for color (one-shot-color) astrophotography, even under light-polluted skies. It passes two key emission lines — hydrogen-alpha (H-alpha) and oxygen-III (O-III) — while blocking almost everything else, so emission nebulae stand out against a dark sky and streetlight glow is suppressed. It threads into standard 1.25-inch filter mounts.

Who it's for
OSC-camera astrophotographers with 1.25-inch filter setups who want stronger nebula contrast from light-polluted skies. New to filters? See our guide to telescope filters.

  • Dual-band H-alpha + O-III: isolates the two lines emission nebulae glow in.
  • Fights light pollution: blocks most artificial skyglow for a darker background.
  • Made for OSC cameras: lets color cameras capture nebulae in one pass.
  • 1.25-inch thread: fits standard 1.25" filter wheels, drawers, and adapters.
  • More contrast, less bloat: emission nebulae stand out cleanly.
Specifications
Type Dual-band nebula filter (H-alpha + O-III)
Best For One-shot-color (OSC) cameras on emission nebulae
Size 1.25" (threaded)
Model / SKU SV220 1.25" (W9172A)

What does a dual-band filter do?
It passes only the H-alpha and O-III emission lines, so nebulae shine through while light pollution and star bloat are suppressed.

Do I need a mono camera?
No — it's designed for one-shot-color cameras, capturing both lines in a single exposure.

Will it help galaxies?
It's for emission nebulae; broadband targets like galaxies and star clusters don't benefit from narrowband filtering.

How is this different from the 3nm SV220?
This dual-band offers strong contrast for typical skies; the 3nm version is ultra-narrow for maximum contrast under heavier light pollution or moonlight.

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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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