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H&Y Night Filter with Frame
- For 100mm K-Series Filter Holder
- Reduces Light Pollution in Night Sky
- Absorbs Yellow Sodium-Vapor Light
- Absorbs Yellow Mercury-Vapor Light
- Absorbs Yellow Light from Low CRI LED's
- 2x Filter Factor, +1 Stop
- 9-Layer Multi-Coating, Optical Glass
- Quick Release Magnetic Filter Frame
- Magnetically Mounts on Holder
- Fast Use of Filter on Holder