ZWO 1.25

ZWO 1.25" OIII 7nm Narrowband Filter

ZWO 1.25" OIII 7nm Narrowband Filter

ZWO

Adding a ZWO O-III Narrowband filter to your imaging collection will take you beyond RGB imaging and reveals your favorite nebulas in a totally new light, no matter how polluted your skies may be! 

€144.00

Available within 5-14 days

Available within 5-14 days

This includes products that we do not keep in stock but are only available on request or have been announced by the manufacturer. For orders of these items, a deposit is required, proportional to the total value of your order. As soon as we receive your order, we will notify you by e-mail or telephone, for the exact delivery time and the amount of the deposit.

Availability: In stock
SKU
ZWO-OIII7nm1.25


ZWO 1.25" OIII 7nm Narrowband Filter


Passes 7nm bandwidth of light centered on a 500nm wavelength, which corresponds to OIII emission lines. All other light is blocked.

Adding a ZWO O-III Narrowband filter to your imaging collection will take you beyond RGB imaging and reveals your favorite nebulas in a totally new light, no matter how polluted your skies may be! 

  • FWHM: 7±0.5nm
  • Glass Thickness 2.0+/-0.03 mm (1.25”/31mm/36mm)
  • Fine-optically polished glass ensures accurate 1/4 wavefront over both surfaces
  • Approx 90% transmission at major OIII line 500nm
  • Infrared wavelength 700-1100nm cut-off
  • <0.1% transmission of off-band, OD3 (Optical Density)
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