From $92.00
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The Baader Planetarium 1.25" Contrast Booster Filter (FCB-1) is a premium optical filter designed to maximize planetary and lunar contrast while reducing atmospheric skyglow. Built with Neodymium-doped glass and featuring a 23-layer dielectric long-pass blocker and 7-layer anti-reflection coating, this filter delivers over 95% transmission while eliminating blue defocused haze common in achromatic refractors. Ideal for visual observation of Mars, Jupiter, the Moon, and solar viewing (with proper solar filters), it offers exceptional performance for both amateur and experienced astrophotographers seeking to enhance detail and color recognition in challenging observing conditions.
| Filter Size | 1.25 in |
| Transmission | 95% |
| Surface Finish | Planoptically Polished |
| Substrate Material | Neodymium-doped Glass |
| Optical Polish | 1/4 Wave Fine |
| Dielectric Long-Pass Blocker Layers | 23 |
| Model Number | FCB-1 |
| Anti-Reflection Coating Layers | 7 |