ZWO O III 31mm Unmounted Narrowband Filter

OUR PRICE $239.95

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    The ZWO O-III 7nm filter (D31) is specialised in observing the nebulae. These filters are ideal as they are more advanced compared to RGB imaging. This OIII filter will amplify your viewing experience as it eliminates any kind of pollution and will result in clear visuals.

    This filter permits light at a wavelength of 500nm and 7nm bandwidth. This responds to the emission and blocks other unecessary light that may cause hindrance.


    • FWHM:7±0.5nm
    • Glass Thickness - 2.0+/-0.03 mm
    • All surfaces are polished in order to achieve 1/4 wavefront
    • Ensures 90% transmission of light at OIII line 500nm (OIII filter )
    • Infrared wavelength - 700-1100nm cut-off
    • <0.1% transmission of off-band, OD3(Optical Density)
    About ZWO Optical: Astrophotography has never been easier
    Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou China.
    They focus on building and innovating groundbreaking CMOS cameras such as the iconic ZWO ASI120MM Monochrome CMOS camera (the first-ever planetary CMOS camera to beat a CCD in the early 2010s).
    ZWO continues to pioneer new astrophotography technology with revolutionary features to capture exceptional quality of images of space that will last you a lifetime.

    Today, ZWO cameras are recognised by every passionate astrophotographer and are available in over 25 countries internationally. 


    Product Code: ZWO-OIII7nmD31


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