Identifiers may also be classified as resolvable or non-resolvable. Archetypical resolvable 2-designs are the finite affine planes. A system identifier usually points to a specific set of declarations in a resolvable location. Other astrophysical sources which are not individually resolvable can also form a background. Gamma Crateris is a double star, resolvable in small amateur telescopes. Moreover, EUV is more liable to print smaller mask defects not resolvable by 193i. It is, however, not resolvable into individual stars even with larger amateur telescopes. Individual stars in M13 are resolvable in a small amateur telescope. These optical pairs are resolvable by the naked eye. Phase shifts are only resolvable relative to other points in the interferogram. The amount of resolvable detail in the horizontal direction in a picture. In summary, these shortcomings are resolvable. His son, John Herschel, described it as "a superb cluster resolvable into countless stars". The amount of resolvable detail in the vertical direction in a picture. The Mickey originally referred to one of these counts, or one resolvable step of motion.