Astromania 2 Inch Multi-Narrowband Galaxy Nebula Telescope H-Beta Filter | Special Narrowband Filter for Telescopes,Metal Frame Telescope Accessories Light Pollution Filters,Accepts 2 Inch Eyepiece 2 Inch
Size2 inch
Special Features
- Filter with metal mount 2 inch and M48 filter threads on both sides
- Executes with a transmission of over 90 percent and completely rejects light pollution
- The high optical quality of the Astromania filters guarantees no loss in sharpness or contrast
- Have extremely high transmissions while completely rejecting light pollution as well as the important blocking of longer wavelengths
- Substrate is fine-optically polished plane parallel to deliver a smooth and accurate 0.25 wavefront over the entire surface
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