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Hi Col, TV plossls also give better image quality than TV Naglers. The 7mm smoothside I once had beat the 7mm Nagler I once had for contrast, sharpness, scatter and lack of reflections on the Moon. So does that mean TV EPs are good, or does it mean the opposite?
For a dob, consider ES' offerings. Decent quality both physically and image wise, large AFoV options and reasonable cost. The 82°11 practically lives in the focuser of my 8" f/6 even though I also have a 13mm T6.
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