Palomar globular clusters

The Palomar globulars have been discovered fairly late due to them being very faint, heavily obscured, remotely located or having few member stars.

Some of the astronomers who identified these objects as globular clusters include George Abell, Fritz Zwicky, Edwin Hubble, Halton Arp and Walter Baade.

Palomar 7 was first discovered by an American astronomer Lewis Swift in 1889, and was independently rediscovered by George Abell as part of the survey in 1952.

[17] The Palomar globulars can be observed and identified by amateur astronomers, however dark skies and high power are required.

Many Palomars are small objects and require the observer to know how to navigate the sky precisely, and rely on averted vision when needed.