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C O R O N A   A U S T R A L I S

 

ori.gif (1448 bytes) Mythology and history

Mythology of Corona Australis

     Very old already she was well-known in the days of Tolomeo, comprised of the 48 constellations of the Almagesto. Its star special instructions lacks stars shining but modest between the fourth and fifth magnitude that remembers clearly to a necklace of per them. Bayer, in its letters, represented it like the garland which appears in the homologous constellation of Boreal Corona but without tapes.

 

ori.gif (1448 bytes) Characteristics

         Corona Australis is a characteristic constellation of observable austral skies during the months of April to October in the South hemisphere and the north rather during the boreal summer. It is a small constellation practically integrated in Sagittarius, limiting the north and the west with her, the east with the constellation of Scorpius and the south with Telescopium. One is closely together of the equator of the Milky Route as it is seen in the graph of the constellation; therefore we can observe an amount of stars but not indeed shining.  From I write the constellation to you is observable during the months of summer in very low latitudes, culminating to single 15º on the horizon, in spite of it I located the 12 to it of August of 1985 at the age of 18 years, and have also been able to make observations by telescope.

        Its form is characteristic, in nights very cleared is possible to see its semicircular form giving foot to the correct name that it has, the one of Crown.

       

Constelación de Corona Australis

 

Main stars

       Alpha, a; denominated Alfecca Meridianto, one is in the North limit of the constellation next to Sagittarius. Its magnitude is of 4.10, of white color. Light of us is to 129 years being 30 times more luminous than our Sun.

      Beta, b; located to the alpha south it is of magnitude 4.11 of yellow color. Located to 508 years light of us, it is a supergiant 450 times more shining than the Sun.

      Gamma, g; of magnitude 4.30 one is near alpha and very next to Sagittarius. Of yellow color light of us is to 58 years being 5 times more luminous than our Sun. Is a precious double star.

       Delta, d; of orange magnitude 4.58, one is in the center of the constellation. Earth light is located to 174 years and is 35 times more luminous than our Sun. 

 

Other objects

           NGC 6541, pretty globular cluster of magnitude 6.60 that is to 23,000 years light in the direction of the center of our Milky Way. It has a diameter angular of 23' of arc and formed by stars of magnitude 13.

 

ori.gif (1448 bytes) Observations by telescope

D O U B L E

Nom: Brs 14 R.A.: 18h.58m.

Dec: -37º08'

Mag: 6.6, 6.9 Sep.: 13" P.A.: 281º Nat:f Spec.: O, B
AOC: 371 DSC: 262 D.D.S.: 21h.56m.(UT); 12-July-1985

brs14

       

        NOTE: One is in a very rich zone; there are a small difference of magnitude, both are blue, it is one very pretty double, is unfolded without difficulty with the eyeglass of 50x

 

D O U B L E

Nom: g R.A.: 19h.03m.

Dec: -37º08'

Mag: 4.9, 5.1 Sep.: 1.6" P.A.: 164º Nat:O Spec.: G, G
AOC: 372 DSC: 263 D.D.S.: 22h.06m.(UT); 12-July-1985

gamma

        NOTE: One is in a very rich zone; there is a smallest difference of magnitude, are excessively together, both are yellow, to unfold it an eyeglass of 200x is essential, and even so, the operation is very difficult due to the low culmination of the double on a latitude from +40º.

 

ori.gif (1448 bytes) Other constellations

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