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Since 1978 Lumicon (USA) has built premium nebula filters—the original UHC and O-III narrowband lines—plus finder scopes and off-axis guiders, now revived under Farpoint Astro’s stewardship. Farpoint continues the legacy, offering filter refurbishment and verified transmission data.
Yes, coatings are applied in California with individual spectral test data included.
The Lumicon UHC blocks mercury/sodium emissions yet keeps H?beta and O?III, enhancing nebula contrast.
Use dedicated optical cleaning fluid and a soft lens tissue; avoid alcohol on dielectric coatings.
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