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A N D R O M E D A

 

ori.gif (1448 bytes) Mythology and history

Mitología de Andromeda    

   Andromeda is daughter of Cefeo, king of Ethiopia, and Cassiopea or Casíope. Her mother boasted a day to be more beautiful than all the Nereidas, reason why Posidón, victim, flooded the country and sent a monster. Consulted oráculo of Ammón, it announced that the only solution was to expose to Andrómeda the monster, reason why was tied to a rock in the coast. In this point Perseo arrived, that returned to kill the Gorgona, and to the moment it fell in love with her.   It decided with Cefeo that, if it killed the monster, would grant the hand to him of Andrómeda, and both made their part in the pact.

      One nevertheless was against Fineo, promised uncle and of Andromeda, and attacked with his men Perseo, but the hero rejected to them easily, then, letting see   his enemies the head of the Gorgona, turned them stones.

    He lived with Perseo in Tirinto giving him several children: Alceo, Méstor, Heleo, Electrión, Esténelo, Perses, of who they said to descend Persian and a daughter, Gorgófone. Eurípides account in its Andrómeda that, to its death, the heroin was turned a precious constellation

 

 

ori.gif (1448 bytes) Characteristics

    Andromeda is a constellation that is to the south of the equator of our galaxy, therefore to the south of the Milky Route; it limits the north with the rich constellations of Cassiopea and Perseus that are in the equator of our galaxy; to the east with the constellation of Lacerta, to the south with Pegasus, Piscis and Triangulum and to the west with Perseus. Andrómeda is characterized to be observed stellar accumulations the north of the constellation, the richest zones from the stellar point of view, and as we entered ourselves towards the south we observed the diminution of stellar density and the appearance of the first galaxies.

    Its form can arrive to us at deceit, that is to say, the regularity of its three aligned more shining stars is an effect of as false persperctiva as the one of the quadrilateral of Pegasus, for example seen from the polestar, these three stars, they would be observed like a triangle rectangle.

   Andromeda comprises of a whole structural and homogenous unit of more than thousand square degrees observable in northern skies during the autumn to high altitude and very low or inoservable on the horizon in the austral spring. 

        

Andromeda
 

Main stars

       Alfa, a; well-known like Alphetraz or Sirrah , of magnitude 2.2 it's color is white bluish and also we can identify it like one of the vertices of the quadrilateral of Pegasus also denominated d Pegasi. It's a 105 light-years.

      Beta, b; also she is well-known with the name of Mirach , his magnitude is of 2.4 and of orange red color, it's to 81 light-years.

     Gamma, g; also call Almak; it's one of double the most beautiful ones of the firmament; it is worth the trouble to go hours contemplating both suns, the main one of yellow color and secondary the blue one, their magnitudes are solely of 3.0 and 5.0 separated 10 arcsec. It's to 163 light-years.

   Delta, d; of  magnitude 3,5 and colour betwen yellow and orange ones and

    Zeta, z; of magnitude 2,8 and yellow colour.

 

Others objets

           Unquestionably, M31, also well-known as the galaxy of Andrómeda is the jewel of the constellation. Light is to 2.3 million years, that is to say, when we at first observed it or with a telescope we observed as it was two million and almost and means ago of years, everything a past, and always emociana when seeing it, he is a little greater than our galaxy, and therefore, the Milky Route is a satellite of her, that is to say, we give returns around her inexorably.

          Soon we have to M32, elliptical galaxy very near M31, and therefore, visible satellite but already with more powerful telescopes something.   

 

 

ori.gif (1448 bytes) Telescopical observations

D O U B L E

Nom:OS 256 R.A.: 00h.06m.

Dec: 31º06'

Mag: 7.9, 7.9 Sep.: 112" P.A.: 113º Nat:op Spec.: A, A
AOC: 191 DSC: 128 D. of D.S.:20h.17m. (UT); 20/sep/1984

osigma256

NOTE: One is double brilliants, is in a rich zone, are very separated, is something feucha and their colors are distinguished perfectly.

 

D O U B L E

Nom:S 2992 R.A.: 23h.11m.

Dec: 39º43'

Mag: 7.9, 9.3 Sep.: 14.0" P.A.: 287º Nat:f Spec.:B, A
AOC: 490 DSC: 353 D. of D.S.: 20h.11m. (UT); 14-Jan.-1986

sigma2992

    NOTE: One is in a very rich zone, in the field has approximately blows stars; there is a remarkable difference of magnitude, are together to 14 ", the main one is most shining of the field, therefore, it does not exist difficulty at the time of finding it.

 

D O U B L E

Nom:h 5451 R.A.: 00h.28m.

Dec: 33º18'

Mag:6.0, 8.6 Sep.: 56" P.A.: 85º Nat:op Spec.: ?,?
AOC: 636 DSC: 449 D. of D.S.:22h.40m. (UT); 10-Aug-1986

h5451

    NOTE: One is in a rich zone, is a great difference of magnitude, are very separated, easy to unfold with the eyeglass of 50x

 

D O U B L E

Nom:S 33 R.A.: 00h.29m.

Dec: 33º55'

Mag: 8.7,8.8 Sep.: 3.1" P.A.: 211º Nat:ph Spec.:?,?
AOC:637 DSC: 450 D. of D.S.:22h.44m.(TU); 10-Aug-1986

sigma33

    NOTE: One is in a rich zone, is a slight difference d magnitude, are little separated, easy to locate is unfolded with a slight difficulty with the eyeglass of 100x; they form a physical system.

 

D O U B L E

Nom: p R.A.: 00h.34m.

Dec: 33º27'

Mag: 4.4 y 8.8 Sep.: 36" P.A.: 172º Nat:f Spec.:A, B
AOC: 638 DSC: 451 D. of D.S.:22h.49m.(UT); 10-Aug.-1987

Pi

 

     NOTE: It's located at a rich zone of stars. There are a high difference of magnitude, both ones are a litte separated; its colours are similiar ones. Easy to find them we can see both ones with 50x eyepiece.

 

D O U B L E

Nom:S 1App R.A.: 00h.44m.

Dec: 30º40'

Mag: 6.7,6.7 Sep.: 47" P.A.: 50º Nat:? Spec.:A,A
AOC:639 DSC:452 D. of D.S.: 22h.52m. (UT); 10-Aug-1986

sigma1app

    NOTE: One is in a slightly rich zone, both components they have the same magnitude, they are slightly separated, is one double pretty, easy to locate and it is unfolded with facility with the eyeglass of 50x.

 

Galaxy

NGC:224

M:31

R.A.: 00h.40m.

Dec: 41º00'

Mag:4.6

Dim:160'x35' AOC:640 N.& C.C.: 189
F.E.:22h.59m. (UT); 10-Aug-1986  

Galaxy

NGC:221

M:32

R.A.: 00h.40m.

Dec: 41º00'

Mag: 4.6

Dim:3'x2' AOC: 641 N.& C.C.:190
D. of D.S.:23h.03m.(UT);10-Aug-1986  

Galaxy

NGC:205

M:--

R.A.: 00h.38m.

Dec: 41º25'

Mag: 9.4

Dim:9'x4' AOC: 642 N.& C.C.: 191
F.E.:23h.06m.(UT);10-Aug-1986  

m31

    M31: It is the famous galaxy of Andrómeda, is enormous, more of 1º, one distinguishes some of the spiral arms perfectly, and until some stars of that world, in addition, it is observed the nucleus of the galaxy and the included/understood darkest zones between his spiral arms.

    M32: One is approximately to 30' to the south of M31, is of the type and 2 , impressive one distinguishes two zones of brightness perfectly corrSpec.onding to the nucleus and periféria.

    NGC205: It is an elliptical galaxy of Sb type, is slightly to the north of M31, is weaker than the previous one, sse must observe in nights oscuars for its identification, is she, also distinguish two zones corrSpec.onding to the nucleus and the spiral arms, although these, are not visible.

 

D O U B L E

Nom: g R.A.: 02h.01m.

Dec: 42º06'

Mag: 2.2,5.6 Sep.: 10" P.A.: 61º Nat:f Spec.:K,B
AOC:643 DSC:453 D. of D.S.:23h.13m. (UT), 10-Aug-1986

gamma

    NOTE: One is in a rich zone, it is one very pretty double, there is a slight difference of magnitude, are not very separated; their colors are distinguished perfectly, main the orange, however, the secondary one is bluish, easy to locate, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom:59 R.A.: 02h.08m.

Dec: 38º48'

Mag: 6.5,6.9 Sep.: 17" P.A.:35º Nat:f Spec.:A,B
AOC: 644 DSC: 454 D. of D.S.:23h.13m.(UT); 10-Aug-1986

59

    NOTE: One is in a rich zone, is a small difference of magnitude, are slightly separated, is unfolded without difficulty with the eyeglass of 50 increases.

 

D O U B L E

Nom:S 245 R.A.: 02h.15m.

Dec: 40º05'

Mag:7.4 ,8.5 Sep.: 11" P.A.: 292º Nat:f Spec.:A,A
AOC: 646 DSC:456 D. of D.S.:23h.35m.(UT); 10-Aug.-1986

sigma245

    NOTE: One is in a rich zone, is a slight difference of magnitude; they are together, its colors are identical, both are white, easy to locate is unfolded with the eyeglass of 50 increases.

 

D O U B L E

Nom:Es R.A.: 00h.08m.

Dec: 49º16'

Mag:8.7, 9.2 Sep.: 67" P.A.: 308º Nat:op Spec.:A, ?
AOC:829 DSC:620 D. of D.S.: 23h.43m.(UT);20-Jul-1987

es

    NOTE: One is in a partially rich zone; to 20' of the double It is Cassiopeae, is a slight difference of magnitude, are quite separated, the main one is white, however, secondary the profit not to identify it its color due to the magnitude that it has, is unfolded without difficulty with 50 increases.

 

D O U B L E

Nom:h 1001 R.A.: 00h.07m.

Dec: 44º26'

Mag: 8.5,9.3 Sep.: 16" P.A.: 77º Nat:f Spec.:?,?
AOC:835 DSC:622 D. of D.S.:23h.05m.(UT);22-Jul-87

h1001

 

    NOTE: One is in a very rich zone, is a slight difference of magnitude, are slightly separated, I do not identify the colors due to the weakness of brightness of the components, is one pretty double and it is unfolded with the eyeglass of 50 increases.

 

 

D O U B L E

Nom:h 1009 R.A.: 00h.13m.

Dec: 48º18'

Mag:9.2 , 9.2 Sep.: 16" P.A.: 26º Nat: ? Spec.:?,?
AOC: 837 DSC:624 D. of D.S.:23h.45m.(UT); 22-Jul-1987

h1009

 

    NOTE: One is in a partially rich zone, both components they are of the same magnitude, they are slightly separated, the colors I do not identify them without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom:S 72 R.A.: 00h.52m.

Dec: 38º54'

Mag: 8.8, 9.6 Sep.: 24" P.A.: 175º Nat:? Spec.:?,?
AOC:866 DSC:650 D. of D.S.:21h.02m.(UT); 17-Sep-1987

sigma72

    NOTE: One is in a partially rich zone; there is a slight difference of magnitude between his components, are something separated, it is one pretty double, it is unfolded without difficulty with the eyeglass of 50 increases.

 

 

D O U B L E

Nom:S 79 R.A.: 00h.57m.

Dec: 44º27'

Mag: 6.0, 6.8 Sep.: 7.8" P.A.: 193º Nat:f Spec.:K, B
AOC:867 DSC:651 D. of D.S.:21h.10m.(UT); 17-Sep-1987

sigma79

 

     NOTE: One is in a partially rich zone, is a slight difference of brightness, is necessary the eyeglass of 200 increases to unfold it and in her to observe a precious system formed by two stars, main orange and secondary the bluish one; as a whole, trat of one bends very pretty.

 

ori.gif (1448 bytes) Other constellations

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