ori.gif (1448 bytes)

O R I O N

 

ori.gif (1448 bytes) Mythology and history

Mitología de Orión

       Orion was son of Poseidón, God of the Sea, and Gea, the Mother Earth. It had an extraordinary beauty and it grew as much that it got to become an authentic giant. So enormous era, that it could walk by the bottom of the deep seas without the waters never covered to him with shoulders for above.

          After many adventures, Orion went to the island of Quíos, where soon after it fell in love with Mérope, the daughter of king Enopión. Such era its love towards her who requested it in marriage. Enopión allowed in it, but previously it demanded the giant that demonstrated to its value carrying out a difficult mission. Orion would have to exterminate a great number of harmful animals that were inflict casualties enormous in the harvests of the island. Once he had exterminated all the noxious animals, the monarch refused to fulfill the fiance'

       

            

Orion tried to take revenge itself of Enopión, but it could not find it since this one took refuge in a so complicated underground camera, that he was practically inescrutable. Then, Orion mounted still more in rage and, infuriated, it gave him to kill with his infallible arrows and without mercy the some all animals that were to him leaving to the step, or were ferocious or tame animals and innocent creatures. Such era the number of casualties that it had already caused, that her Gea mother had to take part requesting to him, without no success, that benevolent and outside reflective. Orion paid neglectful attention to the words to its mother and followed in its thirteen, in spite of the repeated warnings of Gea.

           A day, when the magnificent giant was reunited with its friends, envaneciendo itself of which neither the tigers, nor the panthers, nor still the lions or serpents were able to produce fright to him some, overflowed the patience of its mother, who sent a very poisonous scorpion to him. Orion, when seeing it, could not contain its ironic smile before the absurdity of that insignificant adversary sent by Gea.

         The giant trusted too much and the scorpion itched to him in a foot with its powerful poisonous sting. Terrible ponzoña extended by all the blood of the hunter and this one fell to the dying average ground. When it saw that the death was already imminent, it requested aid and imploró revenge to the Almighty Zeus, since the death that watched to him was little glorious for a personage of its will. It requested to him to the supreme God that hunting dogs of (Canis Mayor and Canis Minor) and onehare placed in skieswith their two faithful (Lepus), so that the men, when they watched upwards in the dark starred nights, remembered their adventures like hunter. Also it asked Zeus the dominion of storms, storms, the ice and winds to him, in order to be able to take revenge his Earth mother that (Gea).

         The God was obliging with Orion and took care of its pleas. The Earth shook, and since then it it has come doing to the present time whenever Orion has seen to appear to on firmament, since this one always has brought with himself the wind, the cold, storms, the ice, snows and the frosts, that so abundant are in winter on the Earth, agreeing with the arrival of this constellation.

          Also Zeus to locate the Scorpion (Scorpius)in the firmament was in charge, but he was careful to put it remotest possible of the giant so that more they never returned to face. Therefore, when Orion disappears of the celestial vault is when it makes his Scorpius appearance. Whereas Orion appears during the winter, Scorpius does in the summer.

 

ori.gif (1448 bytes) Chracteristics

           Orion, is a precious visible constellation during the months of November to visible April in both hemispheres, personally I consider that it is the jewel of the constellations by the amount of shining stars in her and all its simbología that or came from Egyptian when godness it as the Osiris maintaining in its hands to the Aldebarán star or a Tauri. It is very easy to locate and he is spectacular during the boreal winter to be able to contemplate it as majestically it crosses the sky of this a the west.

            Orion, stays to the south of the ecliptic, but nearly, for that reason sometimes according to the inclination of planets on the ecliptic it is possible to be seen them in the North limit of the constellation. Orion is rich in shining stars and giant blue mainly originating of the diffuse nebula M42 or nebula of Orion where still new and most shining stars are forming, the exception confirms Betelgeuse or to Orionis to be a red giant.

            On the other hand, the equator of the Milky Route happens through the western North end of Orion, going to Monozeros soon, is therefore to 10º to the south of the equator of our galaxy, logically we observed a stellar zone riquísima with diffuse nebulas and stellar clusters to observe but without no globular cluster.

          Orion limits of a the north with the zodiacal constellations of Gemini and Taurus, to the east with this one and Eridianus, to the south with the constellation of Lepus and to the west with Monoceros and again Gemini.

            The constellation of Orion was located the 7 of December of 1981 at the age of 14 years from the Majorcan locality of Inca, Spain, was the second constellation in locating it and first of winter and therefore, thanks to her already I could locate the rest that is very easy identifying them.

 

Constelación de Orion

 

Main stars

       Alpha, a; denominated Betelgeuse, super spectacular red giant, 9900 times more shining than the Sun of magnitude 0,57; dista of us 427 years light. One is in the noroccidental end of the constellation, is observed in dark nights his red tonality.

       Beta, b; denominated Rigel, of magnitude 0.28, it is a super blue giant 40000 times more luminous than the Sun, dista 770 years light. This star formed in the diffuse nebula M42 soon to escape to its present position.

        Gamma, g; denominated Bellatrix, of magnitude 1.66 and blue, giant color blue 1000 times more luminous than the Sun, dista 243 years light, is to the northeast of the constellation.

       Delta, d; denominated Mintaka, about magnitude 2.23 and blue color, one is a supergiant 8300 times more luminous than the Sun, dista 920 years light, comprises of the call belt of Orion, formed by three aligned stars (d, and, and z Orionis) that is in the center of the constellation and which they point at Sirius (to Canis Majoris) the star most shining of the sky.

       Epsilon, e; denominated Alnilam, it is the second star of the belt of Orion, of magnitude 1.72 and about blue color, one is a supergiant 30,000 times more luminous than the Sun, dista 1,340 years light, all the stars of the belt formed in diffuse nebula M 42.

       Zeta, z; denominated Alnitak, it is the tecera star of the belt of Orion, of magnitude 1.90 and about blue color, one is a supergiant 10,500 times more luminous than the Sun, dista 820 years light.

            

       Other objects

    M 42-43; precious diffuse nebula of visible magnitude 4.00 at first in her includes also a precious stellar cluster denominated the Trapeze, one of whose components it is a variable in eclipse; we observed that at the moment they are continued forming stars, has an angular diameter superior to 1º.

       M 78; diffuse nebula of quite weak magnitude 8.0 that is in the center of the constellation.

       NGC 2186, cluster  of magnitude 8.70 of 4' of diameter arc, dista 6,000 years light of us. It has an age of 200 million years.

        NGC 1662, cluster  of magnitude 6.40 of 20' of diameter arc, dista 1,300 years light of us. It has an age of 300 million years. One is closely together of Taurus.

        NGC 1980, cluster  with associated nebula of magnitude 2.50 of 14' of diameter arc. One is closely together of M 42 to few minutes of arc; he is really precious to see blue the rich stellar star field just formed.         

 

 

ori.gif (1448 bytes) Observations telescope

 

D O U B L E

Nom: Sh 49 R.A.: 04h.56m.

Dec: 14º28'

Mag: 6.2, 7.6, 9.8 Sep.(AB): 39"

Sep.(AC): 55"

P.A.(AB): 308º

P.A.(AC): 88º

Nat(AB):f?

Nat(AC): op?

Spec.: B, B, B
AOC: 87 DSC: 60 D.D.S.: 1-Jan.-1984

Sh 49

 

            NOTE: One is a precious triple; of components with a persistent difference of brightness, they are very separated, therefore, all the components are unfolded with 50x; in addition, all is blue.

 

D O U B L E

Nom: Sh 469 R.A.: 05h.07m.

Dec: 13º57'

Mag: 8.7, 8.8 Sep.: 26" P.A.: 170º Nat:? Spec.: F, F
AOC: 88 DSC: 61 D.D.S.: 1-Jan.-1984

sh469

 

            NOTE: One is in a rich zone; one is one double of weak components, and slightly separated, of yellow components, it is unfolded without difficulty with the eyeglass of 50x

 

D O U B L E

Nom: S 664 R.A.: 05h.12m.

Dec: 08º22'

Mag: 7.5,8.2 Sep.: 5" P.A.: 170º Nat:? Spec.: F,B
AOC: 89 DSC: 62 D.D.S.: 1-Jan.-1984

sigma664

 

            NOTE: One is in a quite rich zone; it is formed by two components of similar magnitude, are something tight being needed the eyeglass 100 increases to unfold it and to observe main of secondary yellow color and the bluish one.

 

D O U B L E

Nom: S 612 R.A.: 04h.51m.

Dec: 07º18'

Mag: 8.5, 8.5 Sep.: 16" P.A.: 199º Nat: f Spec.: K, K
AOC: 90 DSC: 63 D.D.S.: 2-Jan.-1984

sigma612

 

            NOTE: The northwest of p is to only 40' to the west orionis. One is about one very pretty double, weak components, the same magnitude and orange. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 627 R.A.: 04h.58m.

Dec: 03º33'

Mag: 6.7, 7.0 Sep.: 21" P.A.: 260º Nat: f Spec.: A, A
AOC: 91 DSC: 64 D.D.S.: 2-Jan.-1984

sigma627

 

            NOTE: One is in a quite rich zone. One double is very pretty, is a slight difference of brightness between the components, are slightly separated, both components I see white them, easy to locate is unfolded with 50x.

 

D O U B L E

Nom: S 630 R.A.: 04h.59m.

Dec: 01º32'

Mag: 6.5,7.5 Sep.: 14" P.A.: 50º Nat: f Spec.: ?, B
AOC: 92 DSC: 65 D.D.S.: 2-Jan.-1984

sigma630

 

            NOTE: Orionis, a semiregular variable of N5 phantom is to 45' to the E of W. One is one double brilliant, easy to locate and of shining components, the secondary one is bluish, however, main the profit not to identify it, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 614 R.A.: 04h.53m.

Dec: -00º37'

Mag: 8.4,8.6 Sep.: 4.3" P.A.: 69º Nat:f Spec.: F, F
AOC: 93 DSC: 66 D.D.S.: 2-Jan.-1984

sigma614

 

            NOTE: One is in a rich zone. One is one double of weak components of brightness, and formed by a pair united enough. It is unfolded with 100x, both components I see yellows them.

 

C L U S T E R

NGC:1662

M:-- R.A.: 04h.46m. Dec: 10º54'
Mag: 8.5 Dim: 20' AOC: 250 CNAO: 73
D.D.S.: 23h.54m.(UT); 23-Nov.-1984  

ngc1662

 

            NOTE: One is in a rich zone. One is a weak stellar cluster of brightness and noneasy to localizaar, it is formed by twenty stars, oriented with an angle of position of 45º, is located to 400 parsecs, it has a strong concentration towards the center, since this one is observed nebular, that is to say, indecisive with the R-90mm., the phantom of the youngest star is A0 and has an age of 300 million years.

 

D O U B L E

Nom: S 652 R.A.: 05h.09m.

Dec: 00º58'

Mag: 6.7, 7.8 Sep.: 1.7" P.A.: 182º Nat: f Spec.: M, ?
AOC: 251 DSC: 178 D.D.S.: 22h.15m.(UT); 24-Nov.-1984

sigma652

 

            NOTE: One is in a rich zone. There is a remarkable difference of brightness between the components, are very united, unfolding itself with the eyeglass of 200x, the main one is red, however, profit not to identify the color of the secondary one.

 

D O U B L E

Nom: s R.A.: 05h.11m.

Dec: 02º48'

Mag: 4.6,8.6 Sep.: 7.0" P.A.: 62º Nat: f Spec.: M, ?
AOC: 252 DSC: 179 D.D.S.: 22h.35m.(UT); 24-Nov.-1984

D O U B L E

Nom: No catalog. R.A.: 05h.13m.

Dec: 03º00'

Mag: 9.0,10.0 Sep.: 14" P.A.: 90º Nat:? Spec.: ?, ?
AOC: 253 DSC: 180 D.D.S.: 22h.37m.(UT); 24-Nov.-1984

D O U B L E

Nom: No catalog. R.A.: 05h.13m.

Dec: 02º40'

Mag: 8.0, 9.0 Sep.: 18" P.A.: Nat: ? Spec.: ?, ?
AOC: 254 DSC: 181 D.D.S.: 22h.43m.(UT); 24-Nov.-1984

sigma, CED180 & CED181

            NOTE: s Orionis: One is one pretty double. There is a remarkable difference of brightness between the components, are something separated, is unfolded without difficulty with 50x, the main one has a slight red color, however, profit not to identify the color of the secondary one.

            CED 180: One is one double catalogued, but not identified in the Sky Catalogue 20000 of Sinnot; orionis is to 30' to the east of s, this formed by weak components, slightly separated and of inapreciables colors, it is unfolded without difficulty with 50x.

            CED 181: Identical characteristics to the previous one, of less weak and slightly more separated components.

 

D O U B L E

Nom: 23 R.A.: 05h.20m.

Dec: 03º30'

Mag: 5.2,7.1 Sep.: 32" P.A.: 28º Nat:f Spec.: B, B
AOC: 255 DSC: 182 D.D.S.: 22h.49m.(UT); 24-Nov.-1984

D O U B L E

Nom: No catalog. R.A.: 05h.23m.

Dec: 03º40'

Mag: 8.0, 8.0, 8.5 Sep.(AB): 20"

Sep.(AC): 15"

P.A.(AB): 45º

P.A.(AC): 60º

Nat(AB): ?

Nat(AC): ?

Spec.:B, B, B
AOC: 256 DSC: 183 D.D.S.: 22h.51m.(UT); 24-Nov.-1984

D O U B L E

Nom: S 712 R.A.: 05h.27m.

Dec: 02º58'

Mag: 7.5, 9.5 Sep.: 12" P.A.: 253º Nat: ? Spec.: B, B
AOC: 257 DSC: 184 D.D.S.: 22h.53m.(UT); 24-Nov.-1984

23

 

            NOTE: 23: One is in a very rich zone; one is one pretty double but very separated, there is a slight difference of brightness, both components are blue, is unfolded without difficulty with 50x.

            CED 183: One is a triple of weak components and of blue color, she is very pretty and delicate, orionis is to 40' to the 23 east of, also, is one catalogued but not identified double in the Sky Catalogue 2000,0 of Sinnot. It is unfolded with the eyeglass of 50x, have identical magnitude between the components To, B. Existe a slight difference with component C.

            S 712: Orionis is to 20' to the east of 23. It is one double of weak components and of blue color, slightly separated, it is unfolded without difficulty with the eyeglass of 50x; both components are of similar magnitude. One is one catalogued and identified double in the Sky Catalogue 2000,0 of Sinnot.

            As a whole, it is worth the trouble to observe in a very rich field, three precious doubles, one of them triple one, and all of them of blue color, that is normal in this orionic zone.

 

C L U S T E R

NGC:No cat.

M:-- R.A.: 05h.26m. Dec: 03º20'
Mag: 11.0 Dim: 30' AOC: 258 CNAO: 74
D.D.S.: 22h.57m.(UT); 24-Nov.-1984  

cocn74

 

            NOTE: One is in a rich zone; perhaps it is a stellar condensation by the wealth of the zone since I have not found its identification in the Sky Catalogue 2000,0 of Sinnot, is formed by 50 stars concentrated in 30', is structured with angles of positions of 45º forming two united parallel branches in a vertex with an angle of 100º; nebular structure is not observed.

 

D O U B L E

Nom: S 479 R.A.: 05h.22m.

Dec: 01º45'

Mag: 8.1,8.3 Sep.: 46" P.A.: 220º Nat: ? Spec.: ?, ?
AOC: 259 DSC: 185 D.D.S.: 23h.00m.(UT); 24-Nov.-1984

s479

 

        NOTE: Orionis is to only 10' to the east of 25. It is formed by weak components and with a slight difference of brightness between the components, they are something separated, is unfolded with the eyeglass of 50x.

 

D O U B L E

Nom: S 700 R.A.: 05h.20m.

Dec: 01º00'

Mag: 7.7,7.8 Sep.: 4.8" P.A.: Nat:f Spec.: B, B
AOC: 260 DSC: 186 D.D.S.: 23h.07m.(UT); 24-Nov.-1984

D O U B L E

Nom: Webb R.A.: 05h.20m.

Dec: 01º20'

Mag: 7.7, 9.9 Sep.: 64.3" P.A.: 12º Nat: ? Spec.: K, ?
AOC: 261 DSC: 187 D.D.S.:23h.10m.(UT); 24-Nov.-1984

sigma700 & Webb

       

        NOTE: S 700: One is in a rich zone; one is one pretty double, of equal brightness and color, blue; one is a somewhat united pair. It is unfolded with 200x.

        Webb: One is one catalogued and identified double in the Sky Catalogue 2000,0 of Sinnot. One is to only 20' to the north of S 700. It is formed by weak components of brightness and with a slight difference of brightness among them, profit not to identify the colors of the components, although I believe that they are blue, are slightly separated, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: 33 R.A.: 05h.29m.

Dec: 03º14'

Mag: 5.8,7.0 Sep.: 1.9" P.A.: 27º Nat:ph Spec.: A,A
AOC: 262 DSC: 188 D.D.S.: 23h.17m.(UT); 24-Nov.-1984

33

 

        NOTE: One is in a very rich zone. One is one double of shining components, easy to identify, very tight, I need 200x to unfold it and both components to see them of white color.

 

D O U B L E

Nom: l R.A.: 05h.32m.

Dec: 09º54'

Mag: 3.6,5.8 Sep.: 4.4" P.A.: 43º Nat:f Spec.:K, B
AOC: 263 DSC: 189 D.D.S.:23h.25m.(UT); 24-Nov.-1984

C L U S T E R

Cr: 69

M:-- R.A.: 05h.32m. Dec: 10º00'
Mag: 6.0 Dim: ? AOC:264 CNAO: 75
D.D.S.: 23h.27m.(UT); 24-Nov.-1984  

lamda & Cr69

 

        NOTE: l: One is immersed in the cluster Cr 69 formed by f1 2 Orionis andf Orionis. There is a remarkable difference of brightness between the components, is about one double tight, components white, easy one to locate is unfolded with the eyeglass of 50x.

        Cr 69: Form is an clusterI accept by the previous ones mentioned stars among which altogether they are twenty-five of different magnitudes and color, practicamente all, blue, except l Orionis. Its structure comes determined by to ngulosof two position corresponding to 100º and 45º; the cloudiness with the R-90mm. is not visible, in the cluster. Is located to 500 parsecs, the phantom of the youngest star is Or, which comes to demonstrate the youth of the orionic zone

 

D O U B L E

Nom: S 697 R.A.: 05h.21m.

Dec: 15º00'

Mag: 6.9,8.4 Sep.: 26" P.A.: 285º Nat: f Spec.: ?, ?
AOC: 265 DSC: 190 D.D.S.:23h.45m.(UT); 24-Nov.-1984

sigma697

 

            NOTE: One is in a rich zone. There is a remarkable difference of brightness between the components, are slightly separated, profit not to identify the colors of both components, easy to locate is unfolded with the eyeglass of 50x.

 

D O U B L E

Nom: S 795 R.A.: 05h.45m.

Dec: 06º26'

Mag: 6.1, 6.1 Sep.: 1.6" P.A.: 217º Nat: ph Spec.: ?, ?
AOC: 266 DSC: 191 D.D.S.: 00h.10m.(UT); 25-Nov.-1984

sigma795

 

            NOTE: One is in a rich zone. Both components are of the same magnitude, are very united, I need the eyeglass 200x and a good atmosphere to unfold it, profit not to identify the colors of both.

 

D O U B L E

Nom: S 817 R.A.: 05h.52m.

Dec: 07º01'

Mag: 8.8, 8.9 Sep.: 18" P.A.: 77º Nat: f Spec.: F, F
AOC: 267 DSC: 192 D.D.S.: 00h.16m.(UT); 25-Nov.-1984

sigma817

 

            NOTE: One is to only 30' to the northeast of a Orionis. It is one double of components givesto biles of brightness, slightly separated and both of a smooth yellow

 

D O U B L E

Nom: S 859 R.A.: 06h.07m.

Dec: 05º40'

Mag: 8.3,8.3 Sep.: 42" P.A.: 244º Nat: op Spec.: ?, ?
AOC: 268 DSC: 193 D.D.S.: 00h.30m.(UT); 25-Nov.-1984

C L U S T E R

NGC:2186

M:-- R.A.: 06h.09m. Dec: 05º27'
Mag: 9.3 Dim: 5' AOC: 269 CNAO: 76
D.D.S.: 00h.34m.(UT); 25-Nov.-1984  

sigma859 & NGC2186

 

            NOTE: S 859: One is in a rich zone. One is one double of components of weak brightness and of identical magnitude, they are separated, is unfolded with 50x, profit not to identify the colors of the components.

            NGC 2186: One is to 20' to the Southeastern of S 859. Distinguié is observed of a nebular formndose some stars, is a stellar cluster of low brightness and of reduced dimensions. Is located to 1,800 parsecs.

 

D O U B L E

Nom: S 855 R.A.: 06h.06m.

Dec: 02º31'

Mag: 5.6, 7.0 Sep.: 29" P.A.: 114º Nat: ? Spec.: A, B
AOC: 270 DSC: 194 D.D.S.: 00h.44m.(UT); 25-Nov.-1984

D O U B L E

Nom: No catalog. R.A.: 06h.08m.

Dec: 02º30'

Mag: 10.0, 10.0 Sep.: 50" P.A.: 120º Nat: ? Spec.: ?, ?
AOC: 271 DSC: 195 D.D.S.: 00h.53m.(UT); 25-Nov.-1984

sigma855 & CED195

 

           NOTE: S 855: One is in a rich zone. There is a remarkable difference of brightness between the components, are slightly separated, the main one is white, however, the secondary one is bluish. Easy to locate it is unfolded with 50x.

            CED 195: One is one catalogued but not identified double in the Sky Catalogue 2000,0 of Sinnot. It is formed by very weak and identical components; they are very separated almost 1'; easy to locate since one is to 30' to the east of S 855; it is unfolded without difficulty with the eyeglass of 50x.

 

C L U S T E R

NGC:2112

M:-- R.A.: 05h.51m. Dec: 00º23'
Mag: 8.6 Dim: 12' AOC: 272 CNAO: 77
D.D.S.: 01h.20m.(UT); 25-Nov.-1984  

ngc2112

   

            NOTE: One is in a rich zone. One is a weak stellar cluster of brightness and small, formed by ten stars, it does not have concentration towards the center, it exists cloudiness associated to the cluster, although he is not visible with the R-90mm.

 

D O U B L E

Nom: S 782 R.A.: 05h.40m.

Dec: -00º01'

Mag: 8.5,8.6 Sep.: 46" P.A.: 305º Nat: op Spec.: ?, ?
AOC: 273 DSC: 196 D.D.S.: 01h.23m.(UT); 25-Nov.-1984

sigma782

            NOTE: One is in a rich zone. There is a smallest difference of brightness although he is appreciable, is one double of weak components, whose colors profit not to identify due to the brightness weakness; easy to locate it is unfolded with 50x.

 

D O U B L E

Nom:S 757 R.A.: 05h.36m.

Dec: -00º12'

Mag: 8.6, 8.8, 8.9 Sep.(AB): 1.6"

Sep.(AC): 52"

P.A.(AB): 239º

P.A.(AC): 86º

Nat(AB): f

Nat(AC): f

Spec.: B, B, B
AOC: 274 DSC: 197 D.D.S.: 01h.26m.(UT); 25-Nov.-1984

sigma757

            NOTE: One is a triple of weak components and blue color. Component AB denominates S 757, formed by a pair very united unfolding itself with 200 increases; the pair ABC is S 758; very separated, almost 1'; it is unfolded with the eyeglass of 50x. Between the components have a small difference of brightness.

 

N E B U L A E 

NGC: 1788

M:--

R.A.: 05h.04m.

Dec: -03º22'

Mag: 10.2 Dim: 8'x5' AOC: 435 CNAO: 117
D.D.S.: 23h.44m.(UT); 9-Nov.-1985  

ngc1788

 

            NOTE: One is in a very rich field. Practically immersed in a stellar cluster; it is formed by veintiseis stars, it is a very small and visible weak nebula in two zones pertaining to two stars of the tenth magnitude, is a diffuse nebula, shining, of reflection, very sensible to the red light in photographic plates and of very bluish color. The spectral type of the star is B9V.

D O U B L E

Nom: S 649 R.A.: 05h.07m.

Dec: -08º44'

Mag: 6.0, 9.5 Sep.: 22" P.A.: 81º Nat: ? Spec.: A, B
AOC: 493 DSC: 355 D.D.S.: 20h.30m.(UT); 4-Jan.-1986

sigma649

        NOTE: One is in a very rich zone; there is a remarkable difference of brightness between the components, are something separated, is unfolded without difficulty with the eyeglass of 50x, the main one is white and the secondary one I see it bluish.

 

D O U B L E

Nom: b R.A.: 05h.12m.

Dec: -08º15'

Mag: 0.2, 7.8 Sep.: 10" P.A.: 204º Nat: op? Spec.: B, A
AOC: 494 DSC: 356 D.D.S.: 20h.39m.(UT); 04-Jan.-1986

beta

 

               NOTE: One is Rigel. One is in a rich zone, is an enormous difference of brightness between the components, are slightly separated, is unfolded without difficulty with 50x; the main one is blue, however, I believe that the secondary one is white.

 

C L U S T E R

NGC:1981

M:-- R.A.: 05h.33m. Dec: -04º27'
Mag: 5.0 Dim: 35' AOC: 495 CNAO: 139
D.D.S.: 20h.45m.(UT); 4-Jan.-1986  

N E B U L A E 

NGC: 1973

M:--

R.A.: 05h.33m.

Dec: -04º24'

Mag: 8.5 Dim: 30' AOC: 496 CNAO: 140
D.D.S.: 20h.46m.(UT); 4-Jan.-1986  

ngc1981.GIF (11246 bytes)

       

                NOTE: NGC 1981: One is a precious stellar cluster; formed by twenty blue stars all and, therefore, very young, structurally, it is formed by two parallel lines whose angle of position is of 120º; parsecs is to 400, does not have a concentration towards the center, is associate to cloudy diffuse mother NGC 1973; the phantom of the youngest star is naturally B1.

        NGC 1973: Also, NGC 1975 is denominated; one is the cloudy origin of the cluster, is of emission and reflection, is very sensible to the red light in the photographic plates and has quite persistent a bluish tonality. The average phantom of stars immersed in the cloudiness is B3V.

 

N E B U L A E 

NGC: 1977

M:--

R.A.: 05h.33m.

Dec: -04º54'

Mag: 4.59 Dim: 40'x25' AOC: 497 CNAO: 141
D.D.S.: 20h.47m.(UT); 4-Jan.-1986  

ngc1977

 

        NOTE: One is in a rich zone. One is a shining diffuse nebula and great, the 42 star Orionis is immersed. It is of emission and reflection, blue and of phantom B1V.

 

D O U B L E

Nom: S 747 R.A.: 05h.33m.

Dec: -06º02'

Mag: 4.7,5.5 Sep.: 36" P.A.: 223º Nat: f Spec.: B, B
AOC: 498 DSC: 357 D.D.S.: 20h.48m.(UT); 4-Jan.-1986

D O U B L E

Nom: i R.A.: 05h.33m.

Dec: -05º56'

Mag: 2.9, 7.1 Sep.: 11" P.A.: 252º Nat: f Spec.: B, B
AOC: 499 DSC: 358 D.D.S.: 20h.49m.(UT); 4-Jan.-1986

N E B U L A E 

NGC: 1980

M:--

R.A.: 05h.33m.

Dec: -05º56'

Mag: -- Dim: 14'x14' AOC: 500 CNAO: 359
D.D.S.: 20h.50m.(UT); 4-Jan.-1986  

sigma747 & iota Orionis

           

        NOTE: S 747: One is in a rich zone. A slight difference of brightness between the parts exists, are slightly separated, is unfolded without difficulty with the eyeglass of 50x, both components are blue, forms a pretty double.

            i Orionis: One is to 10' to the south of S 747. There is a remarkable difference of brightness between the components, thisn slightly united, is unfolded without difficulty with the eyeglass of 50x, is immersed in diffuse cloudiness NGC 1980, both components are blue.

            NGC 1980: It has dimensions of 15' of diameter, is distinguished immediately when observing i Orionis, is a nebula of emission, very filamentous whose star associated to the nebula to be in the origin of the stellar formation has a phantom of O9III.

D O U B L E

Nom: q1 R.A.: 05h.33m.

Dec: -05º25'

Mag: 5.5, 6.6, 6.9, 8.2 Sep.(AB): 8.7"

Sep.(AC): 13"

Sep.(BC): 17"

Sep.(CD): 61"

P.A.(AB): 32º

P.A.(AC): 312º

P.A.(BC): 342º

P.A.(CD): 61º

Nat(AB): f

Nat(AC): f

Nat(BC): f

Nat(CD): f

Spec.: B, B, B, B
AOC: 501 DSC:359 S.D.: 20h.53m.(UT); 4-Jan.-1984

D O U B L E

Nom: q2 R.A.: 05h.33m.

Dec: -05º27'

Mag: 5.4, 6.4, 9.0 Sep.(AB): 52"

Sep.(AC): 129"

P.A.(AB): 92º

P.A.(AC): 99º

Nat(AB): f

Nat(AC): f

Spec.: B, B, B
AOC: 502 DSC: 360 S.D.: 20h.54m.(UT); 4-Jan.-1984

N E B U L A E 

NGC: 1976

M:42

R.A.: 05h.33m.

Dec: -05º25'

Mag: 4.2 Dim: 60' AOC: 503 CNAO: 143
S.D.: 20h.56m.(UT); 4-Jan.-1986  

ceta1 & ceta2 & M42

       

        NOTE: q1: One is the called set Trapecium, is immersed in M42, it is formed by four stars of similar magnitude except the component D that is a eclipsante variable with a period of about 60 days, all the components are blue forming a precious and subtle set. It is unfolded with 50x.

        q2: They form a very separated triple, inclined and aligned the components, also, they are blue and with a slight difference of brightness between AB and enough more notable, with component C. is unfolded without difficulty with 50x.

        M42: It is M42. Everything a qualifying adjective describes, and that is worth the redundancy, the nebula of Orion, is a Orionic jewel, where new worlds are forming at the moment, they are observed as component stars with the R-90mm., the doubles previously mentioned, and other that have been enough far from M42 which they are classified as stars of the type associate OB which they acquired a strong speed of flight; one is a nebula of emission and reflection, extremely shining, very sensible to the photographic plates affecting red light, is irregular, amorphous and filamentous, whose spectral composition is of type OB.

        As a whole they form a zone of the sky dreamed by multitude of astrófilos and observed not immediately, like minimum annually, discovering always new things; the best observation of the cluster we obtain it with the eyeglass of 200x.

 

N E B U L A E 

NGC:1982

M:43

R.A.: 05h.33m.

Dec: -05º18'

Mag: 9.0 Dim: 10' AOC: 504 CNAO: 144
S.D.: 20h.57m.(UT); 4-Jan.-1986  

C L U S T E R

NGC:---

M:-- R.A.: 05h.33m. Dec: -04º54'
Mag: 8.5 Dim: 15' AOC: 505 CNAO: 145
S.D.: 20h.58m.(UT); 4-Jan.-1986  

C L U S T E R

NGC: ---

M:-- R.A.: 05h.33m. Dec: -04º59'
Mag: 7.5 Dim: 20' AOC: 506 CNAO: 146
S.D.: 20h.59m.(UT); 4-Jan.-1986  

m43

       

            NOTE: M 43: One is to 7' to the north of M42, smaller dimensions, and a nebula of emission and reflection. He is very shining, sensible to the red color of the plates and forming it divides a star of magnitude 6,85 whose phantom is B1V.

        COCN 145: Perhaps one is the stellar cluster including in diffuse nebula NGC1977, is not due to consider cluster since it does not appear in the Sky Catalogue 2000,0 of Sinnot, is formed by ten stars of which there are to emphasize to the star 42 Orionis, it does not have a structure makes specific since it is formed by few stars all of them of blue color.

        COCN 146: One is between M43 and COCN145 or NGC1977. One is made up of stars shining forming a group of seven stars whose structure, also, cannot be made specific, like the previous one, is not identified in the Sky Catalogue 2000,0 of Sinnot.

 

C L U S T E R

NGC:---

M:-- R.A.: 05h.33m. Dec: -05º44'
Mag: 8.0 Dim: 15'x10' AOC: 507 CNAO: 147
D.D.S.: 21h.05m.(UT); 4-Jan.-1986  

C L U S T E R

NGC: ----

M:-- R.A.: 05h.33m. Dec: -05º56'
Mag: 7.0 Dim: 15'x10' AOC: 508 CNAO: 148
D.D.S.: 21h.12m.(UT); 4-Jan.-1986  

COCN147 & COCN 148

       

        NOTE: COCN 147: It is an cluster that is between M 42 and is orionis. It is formed by ten stars, whose structure is similar exactly Greek l. It does not have concentration towards the center, it has a moderate rank of brightness, is a poor stellar cluster.

        COCN 148: It is formed by fifteen stars, including the doubles mentioned in the scheme i Orionis and S 747. It does not have own structure, does not have one concentracisn towards the center and, in addition, one is a poor stellar cluster.

        Both clusters are not catalogued in the Sky Catalogue 2000,0, by their characteristics, is practicamente safe, that they comprise of a stellar condensation in this zone

 

D O U B L E

Nom: S 688 R.A.: 05h.17m.

Dec: -10º48'

Mag: 8.2, 8.2 Sep.: 10" P.A.: 275º Nat:f Spec.: G, G
AOC: 706 DSC: 513 D.D.S.:18h.46m.(UT); 31-Jan.-1987

D O U B L E

Nom: No catalog. R.A.: 05h.19m.

Dec: -11º00'

Mag: 11.0,11.5 Sep.: 30" P.A.: 350º Nat:? Spec.: ?, ?
AOC: 707 DSC:514 D.D.S.:514

sigma688

       

            NOTE: S 688: One is in a rich zone. Both components are of the same magnitude, are something united, is unfolded with 50x, both I believe that they are yellow.

        CED 514: One is one catalogued but not identified double in the Sky Catalogue 2000,0 of Sinnot. It is formed by weak components and with a slight difference of brightness, they are something more separated and to only 30' to the west of S 688. Due to the weakness of brightness, profit not to identify the colors. It is unfolded without difficulty with the eyeglass of 50x.

 

N E B U L A E 

NGC: 2068

M: 78

R.A.: 05h.44m.

Dec: 00º02'

Mag: 9.0 Dim: 6'x8' AOC: 708 CNAO: 195
D.D.S.: 19h.03m.(UT); 31-Jan.-1987  

m78

 

        NOTE: One is a nebula easy to identify, it is observed two tonalities darker than one is in the center and the other diminishing of luminosity as we moved away of the center, I observe two stars associated of 9ª and 10ª magnitude. It is a nebula of reflection, brilliant, sensible as much to the blue light as to the red one and of stellar phantom B5.

 

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