The missing parts of Telescopium
The ghostly outline of Lacaille’s original, much larger, Telescopium can be traced from the lower left of this
chart into Sagittarius, Scorpius, and Ophiuchus. The supporting mast extended
northwards from the current boundaries of Telescopium through Corona Australis
to the modern Eta Sagittarii, which was Lacaille’s Beta Telescopii. The tube extended upwards and to the right past the curving
tail of Scorpius and included G Scorpii (Lacaille’s Gamma Telescopii, partly obscured here by a globular cluster symbol), ending
at 45 Ophiuchi (Theta Telescopii), just north of the modern Scorpius–Ophiuchus border.
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From Norton’s Star Atlas 20th edition (Ian Ridpath, ed).
© Pearson Education and Charles Nix.