About the product
- Filter with metal mount (2") and M48 filter threads on both sides.
- Executes with a transmission of over 90% 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 1/4 wavefront over the entire surface.
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