Log Book Archives - Page 9 of 24 - Roger Nelson Astronomy

NGC 2403

Roger Nelson February 7, 2024110 Finest NGCs, Galaxies, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Portfolios Leave a Comment

NGC 2403 NGC 2403 (also known as Caldwell 7) is an intermediate spiral galaxy in the constellation Camelopardalis. It is an outlying member of the M81 Group, and is approximately 8 million light-years distant. It bears a similarity to M33, …

NGC 2539

Roger Nelson February 7, 2024110 Finest NGCs, Globular Clusters, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Portfolios Leave a Comment

NGC 2539 NGC 2539 is an open cluster in the constellation Puppis, located at the north edge of the constellation. It was discovered by William Herschel on January 31, 1785. It is a moderately rich cluster and with little central concentration, with Trumpler class II1m. …

NGC 2440

Roger Nelson February 7, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Planetary Nebulas, Portfolios Leave a Comment

NGC 2440 NGC 2440 is a planetary nebula, one of many in our galaxy. Its central star, HD 62166, is possibly the hottest known white dwarf, about 400,000°F(200,000°C). The nebula is situated in the constellation Puppis. It was discovered by …

NGC 2359

Roger Nelson February 7, 2024110 Finest NGCs, Lists, Log Book, Nebulas, NGC Objects, Portfolios Leave a Comment

NGC 2359 NGC 2359 (also known as Thor’s Helmet) is an emission nebula in the constellation Canis Major. The nebula is approximately 3,670 parsecs (11.96 thousand light years) away and 30 light-years in size. The central star is the Wolf-Rayet star …

NGC 2261

Roger Nelson February 7, 2024110 Finest NGCs, Lists, Log Book, Nebulas, NGC Objects, Portfolios Leave a Comment

NGC 2261 NGC 2261 (also known as Hubble’s Variable Nebula or Caldwell 46) is a variable nebula located in the constellation Monoceros. The nebula is illuminated by the star R Monocerotis (R Mon), which is not directly visible itself. The …

NGC 2237 Rosette Nebula

Roger Nelson February 7, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, Portfolios Leave a Comment

NGC 2237 Rosette Nebula The Rosette Nebula (also known as Caldwell 49) is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 …

NGC 2392

Roger Nelson February 7, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Planetary Nebulas, Portfolios Leave a Comment

NGC 2392 NGC 2392 also known as the Eskimo Nebula, Clown-faced Nebula, Lion Nebula, or Caldwell 39, is a bipolar double-shell planetary nebula (PN). It was discovered by astronomer William Herschel in 1787. The formation resembles a person’s head surrounded …

NGC 2371 a Planetary Nebula in Gemini

Roger Nelson February 6, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Portfolios Leave a Comment

NGC 2371-2 NGC 2371-2 is a dual lobed planetary nebula located in the constellation Gemini. Visually, it appears like it could be two separate objects; therefore, two entries were given to the planetary nebula by John Louis Emil Dreyer in …

NGC 2194

Roger Nelson February 6, 2024110 Finest NGCs, Globular Clusters, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Portfolios Leave a Comment

NGC 2194 NGC 2194 is an open cluster in the constellation Orion. The cluster is located about 10,000 light years away from Earth. It is rich and moderately concentrated. The cluster lies 33 arcminutes west-northwest of 73 Orionis. Log Index: …