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Ha, SII and OIII 7nm 50.8mm Filter Set for Astronomy - ZWO

Ha, SII and OIII 7nm 50.8mm Filter Set for Astronomy - ZWO

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Available within 7 days

€885,00 EUR
€885,00 EUR
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The ZWO Ha, SII, and OIII 7nm narrowband filters are specially designed for astrophotography, allowing for the creation of "Hubble-like" quality images. By selectively reducing transmitted wavelengths, these filters eliminate the effects of street lighting and the Moon, providing high contrast for many nebulae.

  • Bandwidth: FWHM 7nm (+/-0.5)
  • 90% transmission on the Ha/S-II/O-III lines
  • Cut-off in the infrared (700/1100nm)
  • Schott glass
  • Glass thickness: 1.85mm
  • Precise optical polishing for a wavefront at lambda/4 and a flatness <30" arc on both surfaces
  • Double-sided optical coating with anti-reflective treatment
  • CNC machined aluminum cell construction
  • Available in 4 formats: 31.7/50.8mm eyepiece and unmounted 31mm/36mm circular
  • Allows the creation of Hubble-quality images
  • Eliminates the effects of street lighting and the Moon
  • Provides high contrast for many nebulae
  • Precise transmission thanks to a bandwidth of 7nm
  • High manufacturing precision due to CNC machining
  • Compatible with astrophotography devices requiring 50.8mm filters
  • Available in eyepiece and circular formats for various uses
  • Ha, SII, and OIII 7nm filters
  • CNC machined aluminum cell
  • Usage documentation
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