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I'm suprised no one has mentioned the Orion edge-on planetary series. I own a 6mm which I use on a 12" dob. This thing is Coma corrected right to the edge, and the contrast is amazing. I even use it for globulars and PN's. It only has a 55* AFOV, which is pretty narrow, but is a good size for it's use as a planetary eyepiece. I haven't tried the TMB's or Hyperions, so I can't give an evaluation.
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