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7nm H-Alpha Filter 31.75mm for Astrophotography - ZWO

7nm H-Alpha Filter 31.75mm for Astrophotography - ZWO

Available within 7 days

€155,00 EUR
€155,00 EUR
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The ZWO H-Alpha 7nm narrowband filter is specially designed for astrophotography, allowing you to capture detailed images of nebulae and other celestial objects emitting in H-alpha. Its optical precision and robust aluminum construction make it an ideal choice for demanding astrophotographers.

  • Bandwidth: FWHM 7nm (+/-0.5)
  • Transmission: 90% on the H-Alpha line (656.3nm)
  • Cut-off in infrared (700/1100nm)
  • Material: High-quality Schott glass
  • Glass thickness: 1.85mm
  • Precise optical polishing for an exact wavefront at lambda/4
  • Parallelism <30" arc on both surfaces
  • Double-sided anti-reflection optical coating
  • CNC machined aluminum cell construction
  • Available in 4 formats: 31.7mm, 50.8mm, 31mm, and 36mm unmounted circular
  • Allows capturing fine details of hydrogen nebulae
  • Reduces effects of light pollution and the Moon
  • Improves contrast against the sky background
  • Reduces the intensity and number of bright stars in the image
  • Compatible with CCD imaging systems and modified cameras
  • Robust construction ensuring great durability
  • Excellent for CCD imaging
  • Ideal for digital photography with modified camera
  • Incompatible with visual observation and film photography
  • H-Alpha 7nm filter
  • Machined aluminum cell
  • Installation instructions

zwo-zwha7_125

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