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The Sharpless catalog is a list of 313 H II regions (emission nebulae) intended to be comprehensive north of declination −27°. (It does include some nebulae south of that declination as well.) (It does include some nebulae south of that declination as well.)
Stewart Sharpless (March 29, 1926 – January 19, 2013) [1] was an American astronomer who carried out fundamental work on the structure of the Milky Way galaxy. As a graduate student at Yerkes Observatory he worked under William Morgan with fellow graduate student Don Osterbrock . [ 2 ]
Z — Fritz Zwicky, Catalogue of galaxies and of clusters of galaxies; ZC — Robertson's Zodiacal Catalogue (James Robertson's catalogue of 3539 zodiacal stars brighter than 9th magnitude) Zij — Islamic astronomical books that tabulates parameters used for astronomical calculations of the positions of the Sun, Moon, stars, and planets
NGC 2359 (also known as Thor's Helmet) is an emission nebula [3] in the constellation Canis Major.The nebula is approximately 3,670 parsecs (11.96 thousand light years) away and 30 light-years in size.
Sh 2-1, also known as Sharpless 1, is the combination of a diffuse HII emission nebula and reflection nebula in the constellation of Scorpius with Pi Scorpii at its center. It appears as a modest brightness making it one of the easier Sharpless catalog objects for amateur astronomers to view.
IC 443 (also known as the Jellyfish Nebula and Sharpless 248 ) is a galactic supernova remnant (SNR) in the constellation Gemini. On the plane of the sky, it is located near the star Eta Geminorum . Its distance is roughly 5,000 light years from Earth.
Messier 16, NGC 6611, [1] Sharpless 49, RCW 165, Cr 375, Gum 83, Star Queen Nebula See also: Lists of nebulae The Eagle Nebula (catalogued as Messier 16 or M16 , and as NGC 6611 , and also known as the Star Queen Nebula ) is a young open cluster of stars in the constellation Serpens , discovered by Jean-Philippe de Cheseaux in 1745–46.
The W5 stellar blast furnace. Heart and Soul. The Soul Nebula (Westerhout 5 or Sharpless 2-199), that is seen on the photo as colorful patch above, is an emission nebula located 7500 light years away from Earth in constellation Cassiopeia.The Heart Nebula (IC 1805 or Sharpless 2-190) is also an emission nebula located in constellation Cassiopeia.