ZWO O III 31mm Unmounted Narrowband Filter


Oxygen III filter for narrowband astrophotography.

  • 7nm bandpass Oii narrowband filter for astrophotography.
  • Filters out all but 502 ± 3.5nm incoming light.
  • Unmounted 31mm filter for fitting into a filter wheel or drawer.

Note: This item is a special order item. We do not hold stock in Mitcham and will order in to fulfil orders only. 

OUR PRICE $249.95

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    This filter is for use with narrowband astrophotography .

    Oxygen III light has a wavelength of 500.7nm, and is a commonly-used narrowband frequency. It can be used as part of two-band, three-band, or other false-colour images.

    About ZWO Optical

    Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou, China. Known for its iconic ZWO ASI 120MM Monochrome CMOS Camera, the first-ever planetary CMOS camera to beat a CCD in the early 2010s, ZWO has  pioneered new astroimaging technology with revolutionary new features, including USB 3,0, cooled systems, ADC and more. Today, ZWO Cameras is known by every passionate astrophotographer and is available in over 25 countries world-wide. 

    Product Code: ZWO-OIII7nm1.25

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