The max zoom of the website is pretty much the maximum resolution seen by the telescope. You can tell because you can see the point-spread functions of the star

The max zoom of the website is pretty much the maximum resolution seen by the telescope. You can tell because you can see the point-spread functions of the stars (i.e., they look like blobs) at the maximum zoom. In order to get better resolution, you need to put your telescope at a better site (on a higher, drier mountain with a more laminar airflow; or in space), or you need adaptive optics (which limits your field of view, making it unsuited to large surveys of the sky like this).