Telescopium
Tel · genitive Telescopii · southern sky
At a glance
- Catalogued stars
- 56
- Visible to the eye
- 56 stars
- Brightest star
- Alp Tel (3.49)
- Best seen
- June
- Declination span
- -49.1° to -46.0°
- Nearest star
- HD 190422 · 76.4 ly
Visible from everywhere south of about 41°N.
When and where to look for Telescopium
Telescopium crosses the meridian — its highest point in the sky — at local midnight around June, which makes the months from May to July the easiest time to find it in the evening. It spans declinations -49.1° to -46.0°, so visible from everywhere south of about 41°N.
The quickest way to find it is to open the live AR sky map and point your phone at the sky — if Telescopium is above your horizon right now, its figure is drawn in the position it genuinely occupies above you.
Brightest stars in Telescopium
| Star | Mag | Type | Distance |
|---|---|---|---|
| Alp Tel | 3.49 | B3IV | 277.8 ly |
| Zet Tel | 4.10 | G8/K0III | 126.2 ly |
| Eps Tel | 4.52 | G5III | 418.1 ly |
| Lam Tel | 4.85 | A0V | 611.9 ly |
| Iot Tel | 4.88 | G9III | 370.6 ly |
| Del1Tel | 4.92 | B6IV | 707.5 ly |
Magnitude runs backwards: lower numbers are brighter, and anything below about 6.5 is beyond the naked eye under a dark sky.
What Telescopium is made of
The catalogue lists 56 stars within Telescopium, of which 56 are magnitude 6.5 or brighter — the limit of what an unaided eye picks up under a genuinely dark sky. The rest need binoculars or a telescope.
Spectral make-up
Spectral class is a temperature ordering, running from O at around 30,000 K down to M below 3,500 K. A constellation is a direction, not a group, so this is simply what happens to lie along that line of sight.
The closest catalogued star in this direction is HD 190422 at 76.4 light years. The most distant is HD 174430 at roughly 1,394 light years — stars that appear side by side here are nothing of the sort.