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Old refractors of that size were typically f/15 - f/18.
That means a focal length around 3.5-4 metres.
At 3.5 metres, 1 degree = 61 mm across the focal plane. At 4 metres, 70mm.
You might just fit the moon in the field of some of the really big 2" eyepieces, like my LV50 mm.
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