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Nebula Filter H-Alpha 1.25-inch 7nm

Nebula Filter H-Alpha 1.25-inch 7nm

Regular price $174.99 USD
Regular price Sale price $174.99 USD
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Features

  • High quality Explore Scientific H-Alpha filter
  • Lets only the emission lines of hydrogen "through"
  • Absorbs almost all of the artificial light
  • More contrast and details for all urban astrophotographers
  • Passband bandwidth: 7 nm
  • H-alpha filters can only be used for astrophotography
  • Narrow-band design for difficult city conditions and with heavily brightened skies
  • Also blocks almost all light from mercury and sodium vapor lamps
  • Many of the red glowing emission nebulae are only visible to their full extent on photos with these filters
  • In spite of the existing light pollution, this results in surprisingly good image results

Description

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