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Ethos 8mm is 1.25'/2". An EBX-2120 barrel extension allows the use of a 2" filter
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Radian 8mm is 1.25" only but you can leave a permanent 2"-1.25" adaptor on the eyepiece.
16mm T5 Nagler with 2x Powermate is 8mm and 2" but not as much eye relief.
32mm Plossl with 4x Powermate gives plenty of eye relief and a big eye lens and is 8mm and 2" barrel.
40mm Plossl with 5x Powermate gives plenty of eye relief and a big eye lens and is 8mm but 1.25" barrel.
31mm Nagler with 4x Powermate gives plenty of eye relief and a big eye lens but is 7.75mm. (2")
35mm Panoptic with 4x Powermate gives plenty of eye relief and a big eye lens but is 8.75mm. (2")
Plenty to choose from, depends on how much you want to pay. The tack sharp to the edge is what you are paying for.
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