The Constellation Telescopium

by Dominic Ford
Telescopium Telescopium
The constellation Telescopium. Roll mouse over to see labels.
Source: Stellarium.

Telescopium is a small and faint southern constellation which appears highest in the evening sky in the months around July.

Its name is Latin for ‘telescope’, and was applied to this area of sky by Nicolas Louis de Lacaille in 1756. Lacaille originally depicted an aerial telescope – a unwieldy design of refractor which comprised of lenses attached to very long poles.

The stars which make up the telescope are of fourth magnitude, and this sky area contains only one bright deep sky object: the globular cluster NGC 6584.

Date First Appeared
1756 (Lacaille)
Sky Area
0.6% of the sky
251.5 square degrees
Messier Objects
Telescopium contains no Messier objects
Caldwell Objects
Telescopium contains no Caldwell objects
Neighbors
The following constellations neighbor Telescopium: Ara, Corona Australis, Indus, Microscopium, Pavo, Sagittarius.
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Brightest Objects in Telescopium

Stars Open Clusters Globular Clusters Galaxies
Stars Open Clusters Globular Clusters Galaxies
α-Tel (mag 3.5) NGC 6584 (mag 9.2) NGC 6861 (mag 11.1)
ζ-Tel (mag 4.1) IC 4797 (mag 11.3)
ε-Tel (mag 4.5) NGC 6868 (mag 12.0)
λ-Tel (mag 4.8) NGC 6887 (mag 12.0)
ι-Tel (mag 4.9) IC 4889 (mag 12.0)
δ¹-Tel (mag 4.9) IC 4837 (mag 12.0)
ξ-Tel (mag 4.9) NGC 6870 (mag 12.2)
η-Tel (mag 5.0) NGC 6758 (mag 13.0)
δ²-Tel (mag 5.1) NGC 6854 (mag 13.0)
κ-Tel (mag 5.2) NGC 6909 (mag 13.0)
ρ-Tel (mag 5.2) NGC 6875 (mag 13.0)
ν-Tel (mag 5.3) NGC 6893 (mag 13.0)
HD 167128 (mag 5.4) NGC 6754 (mag 13.0)
HD 179886 (mag 5.4) NGC 6780 (mag 13.0)
HD 169405 (mag 5.5) NGC 6851 (mag 13.0)
HD 174387 (mag 5.5) IC 4883
PW Tel (mag 5.6) IC 4983
HD 191829 (mag 5.6) IC 4994
HD 170069 (mag 5.7) NGC 6899
HD 182509 (mag 5.7) IC 4894
HD 187420 (mag 5.7) IC 5002
HD 183552 (mag 5.8) IC 4719
HD 173791 (mag 5.8) IC 4915
HD 171819 (mag 5.8) IC 4796
HD 187086 (mag 5.9) IC 4919

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EST

Color scheme