Portfolio Archive - Page 23 of 27 - Roger Nelson Astronomy

M7

Roger Nelson January 12, 2024Log Book, Messiers, NGC Objects, Open Clusters, Portfolios Leave a Comment

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” …

M6

Roger Nelson January 12, 2024Lists, Log Book, Messiers, NGC Objects, Open Clusters, Portfolios Leave a Comment

M6 M6 or the Butterfly Cluster (cataloged as Messier 6 or M6, and as NGC 6405) is an open cluster of stars in the southern constellation of Scorpius. Its name derives from the vague resemblance of its shape to a …

M5

Roger Nelson January 12, 2024Globular Clusters, Lists, Log Book, Messiers, NGC Objects, Portfolios Leave a Comment

M5 M5 or Messier 5 (also designated NGC 5904) is a globular cluster in the constellation Serpens. It was discovered by Gottfried Kirch in 1702. M5 is, under extremely good conditions, just visible to the naked eye as a faint …

M4

Roger Nelson January 12, 2024Globular Clusters, Lists, Messiers, NGC Objects, Portfolios Leave a Comment

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 …

M3

Roger Nelson January 12, 2024Globular Clusters, Log Book, Messiers, Portfolios Leave a Comment

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 …

M2

Roger Nelson January 12, 2024Globular Clusters, Lists, Log Book, Messiers, Portfolios Leave a Comment

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 …

Porrima Gamma Vir +NGC4629

Roger Nelson January 11, 2024Bright Stars, Galaxies, Lists, NGC Objects, Portfolios Leave a Comment

Porrima Gamma Vir +NGC4629 Gamma Virginis (γ Virginis, abbreviated Gamma Vir, γ Vir), officially named Porrima /ˈpɒrɪmə/, is a binary star system in the constellation of Virgo. It consists of two almost identical main sequence stars at a distance of …

M81 M82 in Ursa Major

Roger Nelson January 11, 2024Galaxies, Herschel 400 Catalog, Lists, Log Book, Messiers, NGC Objects, Portfolios Leave a Comment

M81 M82 In Ursa Major these two galaxies are easily captured in the same field of view and are part of the M81 Group the closest outside of our Local Group. Messier 81 (also known as NGC 3031 or Bode’s …

NGC4666 / NGC4668 / NGC4653 / NGC4632 / NGC4642 Virgo Galaxies

Roger Nelson January 11, 2024Galaxies, Lists, Log Book, NGC Objects, Portfolios Leave a Comment

NGC4666 A selection of Galaxies in the Virgo Cluster centered around NGC 4666. NGC 4666 is a spiral galaxy in the equatorial constellation of Virgo, located at a distance of approximately 55 mega-light-years from the Milky Way. It was discovered …