Circinus, is the constellation which is towards west of Triangulum Australe constellation. If you move your eyes towards east, you will see another constellation named Ara. In the North and South of Triangulum Australe, you will find Norma and Apus constellations respectively. Triangulum Australe is nearly between celestial equator and South Pole, and so is fully part of Southern Hemisphere.
It covers up 110 square degree area of the sky. Area wise it is 83rd largest constellation in the sky.
All you need is your naked eyes other than clear skies to see 34 stars of this constellations, as they are the one which are brighter than the lower limit of our naked eyes (i.e. 6.5 apparent magnitude) to see faintest stars. The brightest star of this constellation is alpha Trianguli Australis (Atria).
Constellations are made up of single, binary (apparent and absolute), multiple and variable stars. Out of total 34 stars of different types, here is the list of 20 brightest stars as per their nature:
All the stars that we see naked eyes, all belong to our own, Milky way galaxy (Akash Ganga Tara Vishv). Bright stars can be seen naked eye and faint one through telescope. But the curtain of sky that we see in 2D is actually a huge universe we are talking about, with 3 dimension. There are many nebulous objects visible in every constellations. They differ widely by distances and nature. Like Emission Nebula, Reflecting Nebula, Absorption Nebula, Star Birth Nebula, Supernova Remnants (SNR) and Open Starscluster which are within the disk of our own Milky Way galaxy. Globular cluster are also found, which are in the halo of our galaxy and some most distant objects like galaxies are also visible through telescope. Such objects are defined as “Deep Sky Objects”.
In this constellation there are 9 such different types of Deep Sky Objects observed. Below is the list of all brightest Deep Sky Objects:
NGC 5938 || Barred Spiral Galaxy
NGC 5979 || Planetary Nebula
NGC 6025 || Open cluster
of Triangulum Australe constellation. If you move your eyes towards east, you will see another constellation named Ara. In the North and South of Triangulum Australe, you will find Norma and Apus constellations respectively. Triangulum Australe is nearly between celestial equator and South Pole, and so is fully part of Southern Hemisphere.
stories for this constellation.
ESO-69-6 || Two interacting Galaxies
ESO-137-001 || Barred Spiral Galaxy (with ram pressure stripping)
Henize 2-138 || Planetary Nebula
NGC 5938 || Barred Spiral Galaxy
NGC 5979 || Planetary Nebula
NGC 6025 || Open cluster