Orion Oxygen III Nebula Filter
Product Code: 70
Our Price: $85.00
Description
- Features:
- Transmits close to 90% of the light corresponding to 2 oxygen-III spectral lines at 496nm and 501nm
- Completely blocks virtually all other visible wavelengths
- Highest quality optical glass in a double-threaded, anodized aluminum cell
- Recommended for telescopes of 8" aperture or greater and for visual use only
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