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terrific answer chris
the crux should most definitely not fit in the fov of bino 3 -20x50, most likely it has a fov of 3 deg or less
it must be mislabelled,either that or someone found the eyepiece so bad in that bino they switched out the eyepieces for something diff, perhaps mailing a 7x50; you can time a star drifting across the whole fov
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