Antares 1.25" UHC/LPR Filter - UHC 2" Diagonals and it even has a

and it even has a built-in rechargeable power source that runs for up to 24 hours of continuous operation

Extendable dew caps minimize condensation on lenses

making their aperture smaller

7mm push fit

Antares 1.25" UHC/LPR Filter - UHC 2" Diagonals and it even has aAntares 1. 25" UHC LPR Filter Product Highlights: Antares Ultra High Contrast 1. 25" Filter Antares Light Pollution Reduction Filter Transmission = 480 nm to 510 nm Includes standard 1. 25" size, M28. 4x0. 6 mm Threads The Antares UHC Filter is a specialty filter that blocks the visual spectrum except for wavelengths between 480 nm and 510 nm. This type of blocking filter is also known as a Nebular or ALP (anti light pollution) or an LPR (Light