Microscopium

Microscopium is a small constellation in the southern sky, introduced in the 18th century and named for the microscope.

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Constellation: A constellation is a formally defined region of the sky associated with a named star pattern. Microscopium is one of the 88 officially recognized constellations.
Nicolas-Louis de Lacaille: Nicolas-Louis de Lacaille was a French astronomer who mapped the southern sky in the 18th century. He introduced Microscopium while charting southern constellations from the Cape of Good Hope.
International Astronomical Union: The International Astronomical Union is the global organization that coordinates professional astronomy and defines official constellation boundaries. Its standardized boundaries determine which stars and objects belong to Microscopium.
Crux: Crux is a compact southern constellation marked by the Southern Cross. Unlike Microscopium, Crux is bright, culturally prominent, and recognizable from its star pattern.
Alpha Microscopii: Alpha Microscopii is the brightest star in the constellation Microscopium. It is the constellation’s brightest star, though it is faint to the unaided eye.
Coelum Australe Stelliferum: Coelum Australe Stelliferum is Nicolas-Louis de Lacaille’s 1763 star catalogue and atlas of the southern sky. It records the constellation among Lacaille’s southern-sky additions.
NGC 6925: NGC 6925 is a barred spiral galaxy in the constellation Microscopium. This galaxy is a notable deep-sky object within the constellation.
Ptolemy: Ptolemy was a Greco-Roman astronomer whose star catalogue listed 48 constellations. Microscopium was created centuries after the classical constellations in Ptolemy’s catalogue.
Gamma Microscopii: Gamma Microscopii is a yellow giant star in the constellation Microscopium. It is a conspicuous evolved star within the constellation’s boundaries.
Antlia: Antlia is a southern constellation named for the air pump. It is another Lacaille constellation named after a scientific instrument.