Constellation, Tel
Telescopium: the Telescope
Telescopium covers 252 square degrees of sky, the 57th largest of the 88. Its brightest star is star HIP 90422. It is best placed in the evening sky in August.
Show Telescopium in the live sky
Telescopium at a glance
| Fact | Value |
|---|---|
| IAU abbreviation | Tel |
| Meaning | the Telescope |
| Pronounced | tel-ih-SCOPE-ee-um |
| Genitive, used in star names | Telescopii (for example a Bayer name such as α Telescopii) |
| Area | 252 square degrees, number 57 of 88 by size |
| Stars to magnitude 6 in our catalogue | 27 |
| Brightest star | star HIP 90422, magnitude 3.5 |
| Best seen | Evenings in August, when it is highest at 9 pm |
| Declination range | -57° to -45° |
| Borders | Pavo, Sagittarius, Corona Australis, Ara, Indus, Microscopium |
Where on Earth you can see Telescopium
Telescopium spans declinations -57° to -45°. Every part of it rises above the horizon at some moment for observers between latitudes 90°S and 33°N. Some of it can be seen from latitudes 90°S to 45°N. South of 45°S none of it ever sets. This is geometry only: it ignores haze, hills and buildings near the horizon.
From six cities
| City | Latitude | Visibility | Middle at its highest |
|---|---|---|---|
| Pune | 18.5°N | All of it rises | 20° |
| New York | 40.7°N | Only part of it rises | below the horizon |
| London | 51.5°N | Never rises | below the horizon |
| Tromsø | 69.6°N | Never rises | below the horizon |
| Tokyo | 35.7°N | Only part of it rises | 2° |
| Sydney | 33.9°S | All of it rises | 72° |
Telescopium's named stars
None of the stars brighter than magnitude 6 in Telescopium has a name approved by the IAU Working Group on Star Names.
How these facts were found
The name, meaning and boundaries are the IAU's. Area, borders and the latitude ranges are computed from those boundaries; the brightest star and the star count come from a magnitude-6 star catalogue; star names are matched to the catalogue by Hipparcos number and checked by position. The month is when Telescopium's middle crosses the north-south line of the sky at 9 pm local solar time. See How we know.
Sources
- IAU: The Constellations. Names, meanings, pronunciations and boundaries
- IAU Working Group on Star Names. The official names of stars
- astronomy-engine. The MIT licensed library that does the calculations, run on the page's build machine and in the app
- HYG database v4.4 (astronexus). Distances, spectral types and luminosities, licence CC BY-SA 4.0