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Customer Reviews
Helpful Positive Review Review of Celestron Oxygen III filter by Legacy Reviewer, Verified Owner, May 16, 2008
This is a great filter for viewing emission nebulae. This filter easily doubles the size and greatly increases contrast on several dozen nebulae. I would recommend this filter if you live in a light polluted area. The only con would be that it dar...
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9/9 found this helpful
Helpful Positive Review Great filter, great price by Legacy Reviewer, February 25, 2010
I was wanting to get an oIII filter to catch great views, trouble was, they were all too expensive, and I was worried about quality, you know, cheaply made glass, cheaply coated optics, and anything else that would detract from a proper view of nebu...
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1/2 found this helpful
Helpful Positive Review Celestron Oxygen III Narrowband Filters by Legacy Reviewer, Verified Owner, January 7, 2009
First nite of use on Celestron 8" SC brought me GREAT vues of Orions Nebula. Pros: All good Cons: None that I can find
2/2 found this helpful
Most Recent Reviews Narrow Band III filter by jefferson, Verified Owner, March 1, 2017
Filters the visible spectrum at 435 nano meters, I plan on using this filter with the Celestron Ultima Dou Eyepiece and DSLR camera, I just need 2 more to complete my RGB set SII and HA. I just wished, these filters were not so expensive. THe image...
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Product Info for Celestron Oxygen III Narrowband Filters

Celestron Oxygen III Narrowband Filters isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black sky background and the faint photons of OIII light needed for detailed views of the Veil, Ring, Dumbbell, Crescent and Orion nebulae, among other objects.image

Each Celestron OIII Filter has an ultra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm. This eliminates the un-natural colored halos surrounding bright stars common with Celestron O III Narrowband Filters of less sophisticated coating technology. There are Celestron Oxygen III Narrowband Filter 1.25" (model 93623) and Celestron Oxygen-III Narrowband Fulter 2" (model 93624).

Features of Celestron OIII Filters:

  • Narrowband filter for high transmission and high-contrast images
  • Blocks unwanted light-pollution
  • Ideal for viewing planetary nebulae and supernova remnants

Package Contents:

  • Clestron Oxygen III Narrowband Filter
WARNING: California`s Proposition 65

Celestron Oxygen III Narrowband Filters Orderable Models

List of Orderable Models

Celestron Oxygen III Narrowband Filter - 1-1/4in 93623 , MPN: 93623 , UPC: 050234936231 , Code: CI-TA-Oxg3-Filters-93623
Celestron Oxygen-III Narrowband Filter - 2in 93624 , MPN: 93624 , UPC: 050234936248 , Code: CI-TA-Oxg3-Filters-93624
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