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ZWO OIII 7nm 31.75mm Filter for Astrophotography - ZWO

ZWO OIII 7nm 31.75mm Filter for Astrophotography - ZWO

Available in 7 days

€155,00 EUR
€155,00 EUR
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Optimize your astronomical shots with the ZWO OIII 7nm filter of 31.75mm, specially designed for astrophotography. This narrowband filter targets the wavelength of 500 nm, significantly improving the contrast of nebulae and allowing for exceptionally clear images.

  • FWHM bandwidth of 7 nm (+/-0.5)
  • 90% transmission on the O-III line (500.7nm)
  • Cut-off in infrared (700/1100 nm)
  • High-quality Schott glass with a thickness of 1.85 mm
  • Precise optical polishing ensuring a wavefront at lambda/4 and parallelism < 30 arcsec
  • Double-sided optical coating with anti-reflective treatment
  • CNC machined aluminum construction for high precision
  • Available in 4 sizes: 31.7 mm, 50.8 mm, 31 mm and 36 mm unmounted circular
  • Significantly improves the contrast of nebulae in astrophotographic images
  • Reduces the effects of street lighting through precise wavelength selection
  • Enables the creation of "Hubble" style images in combination with H-Alpha and S-II filters
  • Increased durability and precision thanks to CNC machined aluminum construction
  • CCD imaging
  • Digital photography (modified and unmodified camera)
  • ZWO OIII 7nm filter of 31.75mm
  • CNC machined aluminum cell
  • Double-sided optical coating with anti-reflective treatment

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