![OIII 6.0nm Filter](http://cloudbreakoptics.com/cdn/shop/products/OIII60-48a_{width}x.webp?v=1651102011)
The IDAS Oxygen III filter is designed to isolate the OIII emission bands for best signal-to-noise performance for a wide range of telescope designs.
Features include:
- 6.0 +/- 0.2nm (Measured value)
- 98% transmission rate (Measured value)
- Flat top, which maximizes the transmission even for fast optics
- Out-of-band blocking: 300-1300nm
- Configurations:
- 2.5mm or 3.0mm thickness options
- 3 mount sizes - 48mm, 52mm & 50.8 (for filter wheels)
- Each filter is individually inspected for quality. The filter response is plotted and provided with each unit.
- Made in Japan
![](http://cloudbreakoptics.com/cdn/shop/files/telly_150x150.png?v=1614292674)
Buy risk-free: When it’s time to trade up you’ll get the most value for your used gear.