Portfolios Archives - Page 18 of 27 - Roger Nelson Astronomy

M51 Whirlpool Galaxy

Roger Nelson January 18, 2024Galaxies, Herschel 400 Catalog, Lists, Log Book, Messiers, NGC Objects, Portfolios Leave a Comment

M51 Whirlpool Galaxy M51 Whirlpool Galaxy, also known as Messier 51 or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. It lies in the constellation Canes Venatici, and was the first galaxy to …

M50

Roger Nelson January 18, 2024Lists, Log Book, Messiers, NGC Objects, Open Clusters, Portfolios Leave a Comment

M50 M50 or Messier 50, also known as NGC 2323, is an open cluster of stars in the constellation Monoceros. It was recorded by G. D. Cassini before 1711 and independently discovered by Charles Messier in 1772 while observing Biela’s …

M49

Roger Nelson January 18, 2024Galaxies, Lists, Log Book, Messiers, NGC Objects, Portfolios Leave a Comment

M49 M49 or Messier 49 (also known as NGC 4472) is a giant elliptical galaxy about 56 million light-years away in the equatorial constellation of Virgo. This galaxy was discovered by astronomer Charles Messier in 1777. As an elliptical galaxy, …

M48

Roger Nelson January 18, 2024Herschel 400 Catalog, Lists, Log Book, Messiers, NGC Objects, Open Clusters, Portfolios Leave a Comment

M48 M48 or Messier 48, also known as NGC 2548, is an open cluster of stars in the equatorial constellation of Hydra. It sits near Hydra’s westernmost limit with Monoceros, about 18° 34′ to the east and slightly south of …

M47

Roger Nelson January 18, 2024Herschel 400 Catalog, Lists, Log Book, Messiers, NGC Objects, Open Clusters, Portfolios Leave a Comment

M47 M47 or Messier 47 (NGC 2422) is an open cluster in the mildly southern constellation of Puppis. It was discovered by Giovanni Batista Hodierna before 1654 and in his then keynote work re-discovered by Charles Messier on 1771. It …

M46

Roger Nelson January 18, 2024Lists, Log Book, Messiers, NGC Objects, Open Clusters, Planetary Nebulas, Portfolios Leave a Comment

M46 M46 or Messier 46, also known as NGC 2437, is an open cluster of stars in the slightly southern constellation of Puppis. It was discovered by Charles Messier in 1771. Dreyer described it as “very bright, very rich, very …

M44

Roger Nelson January 17, 2024Lists, Log Book, Messiers, Open Clusters, Portfolios Leave a Comment

M44 M44, The Beehive Cluster (also known as Praesepe (Latin for “manger” or “crib”), M44, NGC 2632, or Cr 189), is an open cluster in the constellation Cancer. One of the nearest open clusters to Earth, it contains a larger …

M41

Roger Nelson January 17, 2024Lists, Log Book, Messiers, NGC Objects, Open Clusters, Portfolios Leave a Comment

M41 M41 or Messier 41 (also known as NGC 2287) is an open cluster in the constellation Canis Major, sometimes referred to as The Little Beehive Cluster. It was discovered by Giovanni Batista Hodierna before 1654 and was perhaps known …

M40

Roger Nelson January 16, 2024Double Stars, Lists, Log Book, Messiers, Portfolios Leave a Comment

M40 M40, A Case of mistaken identity, Winnecke 4 (also known as Messier 40 or WNC 4) is an optical double star consisting of two unrelated stars in a northerly zone of the sky, Ursa Major. The pair were discovered …