li 200i M7 6475

M7

Roger NelsonLog Book, Messiers, NGC Objects, Open Clusters, Portfolios

M7 Messier 7 or M7, also designated NGC 6475 and sometimes known as the Ptolemy Cluster, is an open cluster of stars in the constellation of Scorpius. The cluster is easily detectable with the naked eye, close to the “stinger” …

li 839 MG 0819

M4

Roger NelsonGlobular Clusters, Lists, Messiers, NGC Objects, Portfolios

M4 Messier 4 or M4 (also designated NGC 6121) is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. It was the first globular …

li 1077 MG 2952 scaled

M3

Roger NelsonGlobular Clusters, Log Book, Messiers, Portfolios

M3 M3 is a fine globular cluster located in the northern constellation of Canes Venatici. It’s widely considered by amateur astronomers to be one of the best examples of its type in the northern section of sky beaten only really by M13. With an apparent …

li 248i M2 7089

M2

Roger NelsonGlobular Clusters, Lists, Log Book, Messiers, Portfolios

M2 Messier 2 or M2 (also designated NGC 7089) is a globular cluster in the constellation Aquarius, five degrees north of the star Beta Aquarii. It was discovered by Jean-Dominique Maraldi in 1746, and is one of the largest known …