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  2. Caldwell catalogue - Wikipedia

    en.wikipedia.org/wiki/Caldwell_catalogue

    Caldwell advocates, however, see the catalogue as a useful list of some of the brightest and best known non-Messier deep-sky objects. Thus, advocates dismiss any "controversy" as being fabricated by older amateurs simply not able or willing to memorize the new designations despite every telescope database using the Caldwell IDs as the primary ...

  3. NGC 6729 - Wikipedia

    en.wikipedia.org/wiki/NGC_6729

    NGC 6729 (also known as Caldwell 68) is a reflection/emission nebula of the Corona Australis Molecular Cloud in the constellation Corona Australis. It was discovered by Johann Friedrich Julius Schmidt in 1861. [1] This fan-shaped nebula opens from the star R Coronae Australis toward the star T CrA to the south-east.

  4. Sh 2-155 - Wikipedia

    en.wikipedia.org/wiki/Sh_2-155

    It is widely known as the Cave Nebula, though that name was applied earlier to Ced 201, a different nebula in Cepheus. Sh 2-155 is an ionized H II region with ongoing star formation activity, [ 1 ] at an estimated distance of 725 parsecs (2400 light-years) from Earth.

  5. NGC 2867 - Wikipedia

    en.wikipedia.org/wiki/NGC_2867

    NGC 2867 (also known as Caldwell 90) is an elliptical [5] Type II [7] planetary nebula in the southern constellation of Carina, just over a degree to the NNW of the star Iota Carinae. [8] It was discovered by John Herschel on April 1, 1834.

  6. NGC 2244 - Wikipedia

    en.wikipedia.org/wiki/NGC_2244

    NGC 2244 (also known as Caldwell 50 or the Satellite Cluster) is an open cluster in the Rosette Nebula, which is located in the constellation Monoceros. This cluster has several O-type stars, super hot stars that generate large amounts of radiation and stellar wind. The age of this cluster has been estimated to be less than 5 million years.

  7. NGC 7662 - Wikipedia

    en.wikipedia.org/wiki/NGC_7662

    NGC 7662 is a planetary nebula located in the northern constellation Andromeda.It is known as the Blue Snowball Nebula, Snowball Nebula, and Caldwell 22.This nebula was discovered October 6, 1784 by the German-born English astronomer William Herschel.

  8. NGC 246 - Wikipedia

    en.wikipedia.org/wiki/NGC_246

    NGC 246 (also known as the Skull Nebula [5] or Caldwell 56) is a planetary nebula in the constellation Cetus. It was discovered in 1785 by William Herschel . The nebula and the stars associated with it are listed in several catalogs, as summarized by the SIMBAD database.

  9. NGC 6302 - Wikipedia

    en.wikipedia.org/wiki/NGC_6302

    NGC 6302 (also known as the Bug Nebula, Butterfly Nebula, or Caldwell 69) is a bipolar planetary nebula in the constellation Scorpius.The structure in the nebula is among the most complex ever seen in planetary nebulae.

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