Properties

Like most of Lacailles' "new creations" in the southern sky, this constellation is also small and inconspicuous. It is south of Sagittarius and Corona Australis. The area of the constellation is 252 square degrees and the center culminates around midnight on July 6th. ^{[9, 15]}

Catalogues

• Yale Bright Star Catalog (HR)
• New General & Index Catalogue (NGC/IC)
• Galactic Planetary Nebulae (PNG)
• Milky Way Globular Clusters
• Principal Galaxies Catalogue (PGC)

History

The constellation was introduced in 1752 by the French Lacaille under the original name Tubus Astronomicus in honor of the most important astronomical observation instrument. In the star atlas Uranometria Sive Astrorum Descriptio, which Johann Ehlert Bode drew and published at the beginning of the last century, the constellation Telescopium is realistically drawn. ^{[7, 21]}