William Herschel was the first to resolve individual stars in the cluster, in 1783.

Binoculars or small telescopes will identify this cluster as non-stellar while larger telescopes will resolve individual stars, of which the brightest are of apparent magnitude 13.1.

Modestly sized telescopes will begin to resolve individual stars of which the brightest in M4 are of apparent magnitude 10.8.

Previously, the nearest mergers involved galaxies at distances too great to resolve individual stars.

Earlier in the 20th century, Hubble and others resolved individual stars within certain nebulae, thus determining that they were galaxies, similar to, but external to, our Milky Way Galaxy.

The Perseus Cluster is too far away for telescopes to resolve individual stars and measure their motions.

SOFIA's large telescope is able to resolve many individual protostars and young stars as well as knots of dust and gas that could be starting the process of gravitational contraction to become stars.

In 1943 Walter Baade was the first person to resolve stars in the central region of the Andromeda Galaxy.

A larger telescope resolves individual stars.

William Herschel was the first to resolve individual stars in the cluster in 1791, counting roughly 200.