ZWO 31 mm HA Filter- 7nm

  • Increase the contrast between the imaged nebula and the night sky without brightening the nebula.
  • Bandwidth: 7nm.
  • Wavelength: 656nm.
  • Type: Hydrogen Alpha.
  • Size: 31 mm.
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  • Regular price $149.00
  • $134.10
  • You save: $14.90 (10%)

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ZWO 31 mm HA Filter- 7nm

The H-alpha Narrowband filter transmits only H-alpha wavelength light, which is found in most nebulae, star clusters, galaxies, and stars. This makes these filters ideal for complex false color imaging of such regions. H-Alpha filters such as this one are excellent for boosting contrast and are most definitely a must-have for imaging in areas with high levels of light pollution. This particular H-alpha filter has a bandwidth of 7nm. Unmounted, this filter will fit into filter wheels made to accept 31 mm filters.

OPT Product Number: ZWO-HA7-31MM


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WavelengthPasses light at 656nm