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H-Alpha 7nm filter ZWO 31mm circular unmounted - ZWO

H-Alpha 7nm filter ZWO 31mm circular unmounted - ZWO

zwo-zwha7_31c

Disponible sous 7 jours

€196,00 EUR
€196,00 EUR
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The H-Alpha 7nm narrowband filter from ZWO, measuring 31mm, is specially designed for astrophotography, focusing on a wavelength of 656nm. Ideal for capturing sharp images of nebulae and other celestial objects emitting in H-Alpha, this filter significantly enhances contrast while reducing light interference such as that from streetlights and the Moon.

  • Bandwidth (FWHM): 7nm (+/-0.5)
  • Central wavelength: 656nm (H-Alpha)
  • CNC machined aluminum cell
  • Available in 4 formats: 31.7mm, 50.8mm, 31mm, 36mm unmounted circular
  • Schott glass with double-sided anti-reflective coating
  • Glass thickness: 1.85mm
  • Precise optical polishing ensuring a wavefront of lambda/4
  • Parallelism <30" arc on both surfaces
  • Enhances H-Alpha nebula contrast
  • Reduces the effects of streetlights and the Moon
  • Increases the clarity of celestial objects emitting in H-Alpha
  • Facilitates "Hubble-like" image capture in combination with O-III and S-II filters
  • Minimizes the intensity and number of bright stars in the image field
  • Compatible with CCD imaging systems
  • Ideal for digital photography with modified camera
  • Not compatible with visual observation and webcams
  • H-Alpha 7nm 31mm unmounted circular filter
  • CNC machined aluminum cell
  • Mounting accessories (if applicable)
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