双星团与彗星
2020 January 30 Two Clusters and a Comet Image Credit & Copyright: Rolando Ligustri (CARA Project, CAST) Explanation: This lovely starfield spans some four full moons (about 2 degrees) across the heroic northern constellation of Perseus. In telescopic exposures made during the nights of January 24, 26, and 28 it holds the famous pair of open or galactic ...