Celestron Ultra High Contrast Light Pollution Reduction Filter (1.25")

Celestron UHC (Ultra High Contrast) LPR Filter (1.25") - Reduces Transmission of Wavelengths of Artificially-Produced Light

Celestron UHC (Ultra High Contrast) LPR Filter (1.25") - Reduces Transmission of Wavelengths of Artificially-Produced Light

B&H # CEUHCF MFR # 94123
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Celestron 94123 overview

  • 1Description

LPR (light pollution reduction) filters are designed to selectively reduce transmission of certain wavelengths of light, specifically those produced by artificial light.  These include mercury vapor, high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emissions in our atmosphere.  The UHC LPR filter has improved contrast over the typical broadband filters, giving darker background skies and noticeably improved contrast of emission nebulae.  The advanced coatings enable and impressive 97% total transmission across the entire bandpass, with total blockage of prominent light pollution lines.  It is a perfect filter for viewing nebula from light polluted skies as well as for boosting the contrast of nebula from dark sky sites.

Multilayer, plasma-assisted and Ionbeam hardened dielectric coatings yield supreme durability
UPC: 050234941235
In the Box
Celestron UHC (Ultra High Contrast) LPR Filter (1.25") - Reduces Transmission of Wavelengths of Artificially-Produced Light
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Celestron 94123 specs

    Packaging Info
    Package Weight 0.13 lb
    Box Dimensions (LxWxH) 3.15 x 2.85 x 0.85"

    Celestron 94123 reviews

    Ultra High Contrast Light Pollution Reduction Filter (1.25") is rated 3.7 out of 5 by 12.
    Rated 3 out of 5 by from Celestron UHC (Ultra High Contrast) LPR I live in a suburb, with a street light in front of my house. I bought this to see DSO's better. It definitely reduces artificial light, but it also dims the celestial objects slightly, but the dimming is noticeable. I am using it with Celestron 25 mm & 32 mm Plossle eyepieces. I had read great reviews about this from other folks. However, I would have to say that I am not impressed with its performance. To be fair, it might perform better if I was using it with better quality eyepieces.
    Date published: 2010-10-31
    Rated 4 out of 5 by from Helps in highly polluted areas It does what they claim. Makes images sharper in highly polluted areas. It does darken views a little bit, so fainter objects might be harder to see. No substitution for a dark sky. I still recommend using an online light pollution map to find the darkest possible sky in your area.
    Date published: 2015-02-11
    Rated 4 out of 5 by from Helpful accessory I live in the DC suburbs, where seeing conditions are not great. This filter made a significant difference in the view I have of faint objects. The Orion Nebula looks significantly better with this filter than without. None of the descriptions of this filter indicated that it would make stars appear bluer, but that is a minor point.
    Date published: 2014-03-17
    Rated 3 out of 5 by from Interesting in Theory I've tried this filter on two scopes: one small 3 Reflector and an 8 Dobsonian. On neither did it seem to do what was advertised. It seems that people have the most luck with this on Nebulas but I pointed it at what was supposed to be the brighter Nebulas but saw nothing special. Now, there is a fair amount of light pollution in my area but that is what this is supposed to be filtering. So in that expectation, i do not deem this a success. BUT, i am going to give myself more time with it and try it out in Dark Sky scenarios as well. If I change my opinion or find out I have been using it wrong (not sure how) I will post an update. So to be fair in that the problem could be behind the eyepiece (me), I am giving it 3 stars for now.
    Date published: 2010-11-22
    Rated 5 out of 5 by from Worth every penny Looked at Saturn this morning and could not get it to focus, put this filter on and it was 110% clearer. The only LPR filter I own, can not compare. had a bit of Dew condensation, not the filters fault though.
    Date published: 2012-01-20
    Rated 3 out of 5 by from Maybe not for everyone I havent had the chance yet to test this filter thoroughly (its winter in my country). I live at the suburbs of a light polluted city. Although the sky is not so bad, with the time it has been turning gray coloured. I guess this filter does what its suposed to do: make the sky more darker. And it does very well, but I'm afraid it steals the stars a bit of their brightness. This is my first impression.
    Date published: 2014-07-25
    Rated 5 out of 5 by from Might be better than bigger aperture I was pretty skeptical about a filter really helping me with light pollution, but it works as advertised. I'm using it with an 8 Dobsonian - on all of my various lenses. Before you consider a larger scope to try and see more, get a filter and see what is hiding in the pollution up there! This is serious bang for the buck.
    Date published: 2016-11-23
    Rated 1 out of 5 by from Not for a 60mm telescope I couldn't see with it. It blocked too much light. I had to buy a different diagonal because it is threaded. I am going to return it. When I looked at Jupiter I couldn't see its moons, but when I removed the diagonal I could. Mars turned into 2 dots, red and blue.
    Date published: 2018-07-27
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