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so if i lengthened the opticle tube, i would end up with a scope suffering from spherical aberration? but would it improve the sharpness of the images, brightness etc. a scope with allright views and spherical abberation sounds better then a scope with no abberations but really crap views. i also read somewhere that spherical abberation becomes less noticeable as the focal ratio increases. my scopes an f:8, how bad would the spherical abberation be?
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