Focal Length Max.: 0 mm, Magnification: 0×, Telescope Type: Accessory
- Reduces artificial light pollution selectively
- Significantly enhances the contrast of emission nebulae
- Over 97 percent light transmission in the passband
- Plasma-based dielectric multi-layer coating
- Scratch-resistant and durable thanks to ion beam technology
- Compatible with 1.25-inch eyepiece mounts