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

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

zwo-zwha7_31c

Disponible sous 7 jours

€196,00 EUR
€196,00 EUR
In vendita Épuisé
Coût expédition: ~
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The ZWO 31mm H-Alpha 7nm narrowband filter is specifically 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 from sources such as streetlights and the Moon.

  • Bandwidth (FWHM): 7nm (+/-0.5)
  • Central wavelength: 656nm (H-Alpha)
  • Machined aluminum cell
  • Available in 4 sizes: 31.7mm, 50.8mm, 31mm, 36mm unmounted circular
  • Schott glass with double-sided anti-reflective coating
  • Glass thickness: 1.85mm
  • Precision optical polishing ensuring a wavefront of lambda/4
  • Parallelism <30" arc on both surfaces
  • Enhances contrast of H-Alpha nebulae
  • Reduces effects of street lighting and the Moon
  • Increases clarity of celestial objects emitting in H-Alpha
  • Facilitates capturing "Hubble likes" images combined with O-III and S-II filters
  • Minimizes 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
  • 31mm unmounted circular H-Alpha 7nm filter
  • Machined aluminum cell
  • Mounting accessories (if applicable)
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