Log Book Archives - Page 21 of 24 - Roger Nelson Astronomy

M9

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

M9 Messier 9 or M9 (also designated NGC 6333) is a globular cluster in the constellation of Ophiuchus. It is positioned in the southern part of the constellation to the southwest of Eta Ophiuchi, and lies atop a dark cloud of dust designated Barnard 64. The cluster was discovered by French …

M8

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

M8 The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as an H II …

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 …

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 …

Roger's Astronomy Portfolios

M9

M8

M7

M6

M5

M3

M2

M81 M82 in Ursa Major

NGC4666 / NGC4668 / NGC4653 / NGC4632 / NGC4642 Virgo Galaxies