I'll have a look at that website, but perhaps you can tell me what difference there would be between a 24MP crop sensor DSLR on a 1000mm telescope and a 24MP full-frame DSLR on a 1500mm telescope. As far as I can tell, there won't be any difference (besides vignetting etc which is beside the point I'm making).
If they are indeed identical in the images they take, surely it's not unreasonable to call the effect magnification.
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