Target Type R. A. Dec. Constellation Magnitude Size C24 (NGC 1275) Spiral Galaxy 03h 19m 48s +41° 30′ 42″ Perseus +11.9 2.2×1.4 arcmin Overview The central and brightest member of the Perseus Cluster of galaxies, NGC 1275 (C24) is known as the radio source Perseus A. William Herschel is sometimes said to have discovered it […]
Challenge #3 – C24, Perseus A, Spiral Galaxy in Perseus Read More »
Target Type R. A. Dec. Constellation Magnitude Size C16 (NGC 7243) Open Cluster 22h 15m 08s +49° 53′ 34″ Lacerta +6.4 29 arcmin Overview Like so many of the Caldwell objects, this one was discovered by William Herschel, when he first observed it in September 1788. He noted that it was a cluster of coarsely
Target Type R. A. Dec. Constellation Magnitude Size C24 (NGC 1275) Spiral Galaxy 03h 19m 48s +41° 30′ 42″ Perseus +11.9 2.2×1.4 arcmin Overview The central and brightest member of the Perseus Cluster of galaxies, NGC 1275 (C24) is known as the radio source Perseus A. William Herschel is sometimes said to have discovered it
Challenge #3 – C24, Perseus A, Spiral Galaxy in Perseus Read More »
Target Type R. A. Dec. Constellation Magnitude Size C16 (NGC 7243) Open Cluster 22h 15m 08s +49° 53′ 34″ Lacerta +6.4 29 arcmin Overview Like so many of the Caldwell objects, this one was discovered by William Herschel, when he first observed it in September 1788. He noted that it was a cluster of coarsely
Challenge #3 – C16, Open Cluster Read More »
