- Star Tales - Dorado (ianridpath.com)
A small southern constellation introduced at the end of the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. Dorado was first depicted on a star globe of 1598 by the Dutchman Petrus Plancius and first appeared in print in 1603 on the Uranometria atlas of Johann Bayer.
- Star Tales - Horologium (ianridpath.com)
One of the small southern constellations introduced by the Frenchman Nicolas Louis de Lacaille after he mapped the southern stars in 1751–52. Lacaille wrote that the constellation represented a pendulum clock beating seconds, as used for timing his observations. Lacaille introduced it on his first chart in 1756 under the French name l’Horloge, but this was Latinized to Horologium on the second edition of 1763.
- Star Tales - Hydrus (ianridpath.com)
A small southern counterpart of the great water-snake, Hydra, with which it is not to be confused. This is one of several examples of the repetition of constellation figures in the sky, as in the Great and Little Bear, the Great and Little Dog, the two lions, the horses Pegasus and Equuleus, the Northern and Southern Crown, and the Northern and Southern Triangle.
- A small southern constellation, introduced by the French astronomer Nicolas Louis de Lacaille to commemorate the reticle in the eyepiece of his small telescope with which he catalogued the southern stars from the Cape of Good Hope in 1751–52.
