About the product
- 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
