Celestron 1.25" UHC/ LPR Light Pollution Telescope Filter

  The Celestron Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low-pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow). Reduce the Light Pollution in Your Images with the Celestron LPR Filters The new ultra-high contrast (UHC) LPR astronomy filter has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. Its modern technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines.  The multi-layer dielectric coatings are plasma-assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching. Improved transmission