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Caldwell number NGC number Common name Image Type Distance (1000 ly) Constellation Apparent magnitude; C1 NGC 188: Polarissima Cluster: Open Cluster: 4.8 Cepheus: 8.1 C2 NGC 40: Bow-Tie Nebula: Planetary Nebula: 3.5 Cepheus: 11 C3 NGC 4236 Barred Spiral Galaxy: 7,000 Draco: 9.7 C4 NGC 7023: Iris Nebula: Open Cluster and Nebula: 1.4 Cepheus: 7 ...
PK 349+01 1, [1] Butterfly Nebula, [5] [6] Sharpless 6, RCW 124, Gum 60, Caldwell 69 See also: Lists of nebulae NGC 6302 (also known as the Bug Nebula , Butterfly Nebula , or Caldwell 69 ) is a bipolar planetary nebula in the constellation Scorpius .
NGC 3132 (also known as the Eight-Burst Nebula, [2] the Southern Ring Nebula, [2] or Caldwell 74) is a bright and extensively studied planetary nebula in the constellation Vela. Its distance from Earth is estimated at 613 pc or 2,000 light-years .
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. [1] The nebula is roughly 3,500 +720 −850 light-years away. [2]
An infrared Spitzer Space Telescope (SIRT) image of NGC 2244. Credit: SIRT/NASA. 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.
NGC 6826 (also known as Caldwell 15) is a planetary nebula located in the constellation Cygnus. It is commonly referred to as the "Blinking Planetary", although many other nebulae exhibit such "blinking". When viewed through a small telescope, the brightness of the central star overwhelms the eye when viewed directly, obscuring the surrounding ...
NGC 3242 (also known as the Ghost of Jupiter, Eye Nebula or Caldwell 59) is a planetary nebula located in the constellation Hydra.. William Herschel discovered the nebula on February 7, 1785, and catalogued it as H IV.27.
NGC 6193 and the nebula NGC 6188. Observation data ... (also known as Caldwell 82) ... Image of NGC 6193, centered on HD 150136