Celestron UHC/LPR Filter - 1.25'

Technical Details

Our 1-1/4" Light Pollution Reduction (LPR) Filters are engineered to selectively diminish the transmission of specific light wavelengths, particularly those emitted by artificial sources. These encompass mercury vapour, alongside high and low-pressure sodium vapour lights, and the undesirable natural light generated by neutral oxygen emission in our atmosphere, commonly known as sky glow. The ultra high contrast (UHC) LPR filter enhances contrast beyond the standard broadband filters. The sky background appears darker, and the contrast of emission nebulae is markedly improved. Thanks to advanced coating technology, the filter achieves an exceptional transmission rate of over 97% across the entire bandpass, completely blocking prominent light pollution lines.

Key Features

• Ultra High Contrast (UHC) LPR filter
• Advanced coating technology
• Exceptional transmission rate of over 97%
• Multi-layer dielectric coatings
• High transmission, sharp cut-offs, and moderate 60nm passband

This makes it the ideal filter for observing nebulae in light polluted skies or for enhancing the contrast of nebulae in dark sky locations. Beyond its optimal spectral and optical characteristics, the UHC/LPR filter possesses key features that distinguish it and result in superior celestial views: The multi-layer dielectric coatings are plasma-assisted and ion-beam hardened using cutting-edge technology for durability and scratch resistance. Enhanced transmission equates to maximum image brightness and contrast. Users of smaller, 4"-11" telescopes will particularly value the high efficiency, while larger scope users will be captivated by the rich star fields and intricate subtle nebular shadings that remain intact. The high transmission, sharp cut-offs, and more moderate 60nm passband of the UHC/LPR filter retain a more natural view, yet significantly amplify overall contrast. Imagers will value the broader bandpass and inclusion of an exceptionally efficient H-Alpha passband (656nm).

Top Three Features

Ultra High Contrast (UHC) LPR filter: This feature enhances contrast beyond standard broadband filters, making the sky background appear darker and improving the contrast of emission nebulae. It's perfect for those who want to observe the night sky with greater detail and clarity.

Advanced coating technology: Thanks to this feature, the filter achieves an exceptional transmission rate of over 97% across the entire bandpass, completely blocking prominent light pollution lines. This makes it ideal for observing nebulae in light polluted skies or for enhancing the contrast of nebulae in dark sky locations.

Multi-layer dielectric coatings: These coatings are plasma-assisted and ion-beam hardened using cutting-edge technology for durability and scratch resistance. This ensures that the filter remains in top condition, providing superior celestial views for a longer period.

Our expert's opinion about the Celestron UHC/LPR Filter - 1.25"

The Celestron UHC/LPR Filter - 1.25" is a remarkable piece of equipment for any astronomy enthusiast. With its Ultra High Contrast (UHC) LPR filter, advanced coating technology, and multi-layer dielectric coatings, it offers an exceptional viewing experience. The filter's high transmission rate and sharp cut-offs make it ideal for observing nebulae in both light polluted skies and dark sky locations. Whether you're a user of a smaller 4"-11" telescope or a larger scope, you'll appreciate the high efficiency and the rich star fields and intricate nebular shadings that remain intact. A more natural view is retained, yet the overall contrast is significantly amplified, making your celestial observations truly unforgettable.