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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 ...
This fan-shaped nebula opens from the star R Coronae Australis toward the star T CrA to the south-east. R CrA is a pre-main-sequence star in the Corona Australis molecular complex, one of the closer star-forming regions of the galaxy at a distance of 130 pc. [1] NGC 6729 is a variable nebula which shows irregular variations in brightness and in ...
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 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 40 (also known as the Bow-Tie Nebula and Caldwell 2) is a planetary nebula discovered by William Herschel on November 25, 1788, and is composed of hot gas around a dying star. The star has ejected its outer layer which has left behind a small, hot star. [ 4 ]
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.
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.
IC 405 (also known as the Flaming Star Nebula, SH 2-229, or Caldwell 31) is an emission and reflection nebula [1] in the constellation Auriga north of the celestial equator, surrounding the bluish, irregular variable star AE Aurigae. It shines at magnitude +6.0. Its celestial coordinates are RA 05 h 16.2 m dec +34° 28′. [2]