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Celestron UHC/LPR Filter 1.25"

The Celestron UHC/LPR Filter - 1.25" 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).

This new ultra high contrast (UHC) LPR filter has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced 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. This is the perfect
filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites.

Features
- The multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.

- Improved transmission translates to maximum image brightness and contrast. Users of smaller, 4"-11" telescopes will especially appreciate the high efficiency, and larger scope users will love the rich star fields and detailed subtle nebular shadings that are left intact.

- The high transmission, sharp cutoffs, and more moderate 60nm passband of the UHC/LPR filter retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader
bandpass and inclusion of an extremely efficient H-Alpha passband (656nm).










RIP - This product is no longer available on our network. It was last seen on 25.09.2019

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  • Availability: Out Of Stock
  • Supplier: PicStop
  • SKU: c2405161645
Availability: In Stock
£79.99

Product Description

The Celestron UHC/LPR Filter
- 1.25" 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, & both high & low pressure sodium vapor lights & the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow).

This new ultra high contrast (UHC) LPR filter has enhanced contrast over the typical broadband filters. Sky background is darker, & contrast of emission nebulae are noticeably enhanced. The advanced 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. This is the perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites.

Features
- The multi-layer dielectric coatings are plasma assisted & Ionbeam hardened using the latest technology for durability & resistance to scratching.

- enhanced transmission translates to maximum image brightness & contrast. Users of smaller, 4"-11" telescopes will especially appreciate the high efficiency, & larger scope users will love the rich star fields & detailed subtle nebular shadings that are left intact.

- The high transmission, sharp cutoffs, & more moderate 60nm passband of the UHC/LPR filter retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader bandpass & inclusion of an extremely efficient H-Alpha passband (656nm).

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Jargon Buster

Filter - A device used to separate mixtures
Filter - An optical device to remove or enhance particular wavelengths of light.
star - A giant ball of plasma held together by gravity.
Dark - A colour which absorbs visable ligt so apears less light than objects that reflect light
Plasma - The fourth state of matter with specific electrical properties. Used in Flat screen TVs
Mercury - A small planet 46.8 -69.4 million kilometres from the sun. It is the closest planet to the sun.
Love - Someone who shows deep affection for someone else.
Natural - not manmade
Layer - Adding extra quantities of materials for extra practical benefits, e.g. warmth.
Subtle - Something that is delicate and not to harsh, can be difficult to describe.
Glow - Something that gives out a steady light.

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