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Model: zwo_oiii_31-7nmPart Number: ZWO-OIII7nmD31
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!
When used in a filterwheel with the complete single washer type fixing, these filters are really good. Havenít tried a target with a very bright in field yet for the O and S filters, but the H does give a halo . The O filter is slightly off focus from the H and S. But for the price I forgive the minor shortcomings.
First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY
Company No. 5892293VAT No. 907 2895 01
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