The Celestron 94123 UHC/LPR filter selectively blocks wavelengths associated with artificial light pollution and atmospheric glow. Its transmission band has a width of 60 nm and transmission above 97%. It enhances the contrast of emission nebulae and darkens the sky background. It is suitable for observing nebulae under both light-polluted and dark skies.
Its multiple dielectric coatings are plasma-enhanced and hardened for scratch resistance. It also features a second transmission band around the hydrogen H-alpha line at 656 nm.
- Type: UHC/LPR light pollution reduction filter
- Diameter: 31.8 mm (1 1/4 inches)
- Transmission: Over 97%
- Transmission bandwidth: 60 nm
- Coatings: Multiple dielectric coatings with plasma enhancement and hardening
- Use: Observing nebulae under light-polluted and dark skies
- Type
- Telescope Accessories
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.