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Title: Lumicon Oxygen III superb on Nebulas
Review: I have used Lumicon's Oxygen III filter for many years. The Veil and Helix are very dim and hard to find without the filter, but pop out with extremely bright detail when using this filter. I have used this filter with my 20-inch reflector, but it works well with any size scope. You will get fantastic views of M57 (the Ring), M27 (the Dumbell), M17 (the Swan or Omega), M8 (the Lagoon), M 44 ((the Great Orion), as well as hundreds of other nebula. I have used used other filters like the ultra high contrast, but the oxygen III reigns King!
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