Argo Navis, or simply Argo, is one of Ptolemy's 48 constellations, now a grouping of three IAU constellations. It was formerly a single large constellation in the southern sky. The genitive is "Argus
The constellations Argo Navis and Robur Caroli as shown by Johannes Hevelius
Pyxis is a small and faint constellation in the southern sky. Abbreviated from Pyxis Nautica, its name is Latin for a mariner's compass. Pyxis was introduced by Nicolas-Louis de Lacaille in the 18th c
The constellation of Pyxis, the compass, as it can be seen by the naked eye
Hubble Space Telescope picture of T Pyxidis, showing ejected material from past eruptions
The planetary nebula NGC 2818, imaged by the Hubble telescope