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14mm works a treat with my ED80, HRH Liz would like to claim the 14mm permanently for terrestrial use. I seem to remember reading that the maximum workable magnification is 40x the diameter in inches which on an ED80 amounts to about 120x. Barlowed 3x a 14mm would give 130x but I haven't tried it yet, but I would imagine this would be about the highest practical mag for the ED80.
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