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May 30 2012 Stars2 FASI Book

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May 30 2012 Stars2 FASI Book The Stars Lyra The Lyre Cygnus The Swan Aquila The Eagle Scorpius The Scorpion Sagittarius The Archer Cygnus Happens Upon a Battle Orion and the Big Dipper are not the only Scorpio The Scorpion has turned his stinger constellations with stories to tell. toward the Sagittarius The Archer, who in turn raises his bow at him. An eagle fees the Cygnus The Swan points us to an action- mayhem, fying up to warn Cygnus of the packed scene. Cygnus is inadvertently fying danger. Meanwhile, the hapless Swan fies along toward a battle raging between the Scorpion and peacefully, following the music of Lyra The the Archer. Lyre. 74 Four Stories Before we continue our story, let’s take a look at the bright stars near the VegA Swan. Cygnus The Swan Cygnus moves sideways across the sky as though being blown by a strong wind. The bright star Vega leads the Swan in its travels. Cygnus The Swan VegA Another bright star, Altair, is forward of the Swan’s other wing. AltAir 75 The Stars deneb VegA AltAir These three stars, Vega, Altair, and Deneb create the famed asterism the Summer Triangle. It may actually be easier to pick out the whole triangle than to fnd just the swan since Vega and Altair are much brighter than the Swan’s body and wings. The Swan is poised to fy right between Vega and Altair. Vega is on its leading wing, and Altair is on the trailing as Cygnus moves sideways through the night. 76 Four Stories deneb VegA Cygnus The Swan AltAir AntAres If you look farther across the sky, you can see that the Swan is aimed directly at another bright star, Antares. These four bright stars (Vega, Altair, Deneb and Antares) set the stage for the Swan’s story. 77 The Stars deneb Cygnus is most easily recognized as simply a T-shape. Its brightest star is Deneb, which means “tail of the hen.” Cygnus The Swan Tail of the Hen Tail When skies are dark and clear, Cygnus Wing forms a complete bird with long, outstretched Feet neck, wide wings and trailing feet. Wing Neck Head Cygnus The Swan The Whole Bird 78 Four Stories Cygnus The Swan The four main stars of Cygnus that form the T-shape are bright enough to see any time stars are out. The stars marking the Swan’s head and one wingtip are next brightest, so look for these next. The rest of the Swan is only visible on a darker sort of night. 79 The Stars VegA Cygnus Lyra The Lyre The Swan 1. Sirius 2. Arcturus 3. Vega Lyra The Lyre appears just forward of one of the Swan’s 4. Capella wings. Even though the Swan is pointed south, he actually 5. Rigel moves in the direction of the Lyre. 6. Procyon 7. Betelgeuse 8. Altair You can imagine that the sweet music of the Lyre 9. Aldebaran mesmerizes the bird and beckons it to follow. 10. Antares 11. Spica 12. Pollux 13. Fomalhaut 14. Deneb 15. Regulus 80 Four Stories Lyra is a compact constellation made up of nine stars. There is not much to see in this group, a squarish frame with two VegA strings. It would be unremarkable except Strings that it is home to our third-brightest star, Vega. Lyra The Lyre You won’t usually notice any stars of the Lyre except the very bright Vega. VegA The two stars at the base of the strings may be visible, but the rest drop off to 4th magnitude so they require excellent viewing conditions. Lyra The Lyre 81 The Stars Cygnus The Swan AltAir Aquila The Eagle 1. Sirius 2. Arcturus Aquila (AK-weh-lah) The Eagle is in front of the 3. Vega Swan’s other wing. The Eagle is fying directly toward 4. Capella Cygnus. Aquila has its brightest star in its head instead of 5. Rigel its tail. 6. Procyon 7. Betelgeuse Aquila is fying away from where Cygnus is heading. 8. Altair He seeks to warn the peaceful Swan that it is fying straight 9. Aldebaran 10. Antares toward a raging battle. 11. Spica 12. Pollux 13. Fomalhaut 14. Deneb 15. Regulus 82 Four Stories Aquila The Eagle has outstretched Head wings similar to the swan. But this bird Wing remains a stick fgure even in a dark AltAir sky. You can imagine that the bright star Altair marks the bird’s eye. Wing Tail Aquila The Eagle The Eagle is a fun constellation to fnd even when conditions are not great. Besides number eight Altair in the head, bright stars mark the body, wings, and tail of the bird. Aquila The Eagle 83 The Stars Cygnus The Swan Scorpius The Scorpion AntAres 1. Sirius 2. Arcturus Scorpius The Scorpion has his stinger turned toward 3. Vega 4. Capella the Archer and is ready to strike. The bright star Antares is 5. Rigel directly in the path of the Swan. 6. Procyon 7. Betelgeuse The Scorpion takes a low arc across the southern sky 8. Altair and is right along the path traveled by the Sun, Moon, and 9. Aldebaran planets. In fact, the name “Antares,” means “rival of Mars,” 10. Antares because the bright red star can easily be mistaken for the 11. Spica red planet. 12. Pollux 13. Fomalhaut 14. Deneb 15. Regulus 84 Four Stories (AntAres) Neck Pincers Stinger Body Scorpius The Scorpion Scorpius has 14 stars that are 3rd order magnitude or brighter, making it one of the most complete constellations you will see in medium-darkness skies. Antares defnes the neck and makes a great anchor point for your eye while you pick out the rest of the stars that form the pincers, body, tail and stinger of the Scorpion. 85 The Stars Cygnus The Swan Sagittarius The Archer Sagittarius The Archer does battle with the Scorpion. He follows the arthropod across the sky, keeping it in the sights of his bow. 86 Four Stories Plume Bow Head Body Sagittarius Feet The Archer The stars of Sagittarius form the shape of an archer aiming his bow. He leans forward pointing his bow at the Scorpion, with his head tilted back. A plume curves up from the back of his head. 87 The Stars Sagittarius The Archer Sagittarius does not have any frst- order magnitude stars, but he is easy to fnd because of his proximity to the scorpion and the uniform brightness of the stars in his torso, head, and bow. It takes a darker night to pick out his plume and feet. 88 Four Stories Lid Handle Spout Teapot Sagittarius The Archer Some folks don’t see an archer at all when they look at Sagittarius. It is common for people to view this constellation as a teapot, and it’s easy to see why. The teapot shape is compact and is formed using just the bright stars of Sagittarius. The pot, handle, lid and spout are clearly outlined. Whichever shape you imagine, these stars are satisfying to observe. 89 The Stars This completes our story of Cygnus Happens Upon a Battle. If Cygnus is visible, you’ll have stories to tell to your friends about your new friends in the sky. Test your knowledge on the next page. 90 Four Stories 1 Name the Constellations: 2 1 2 3 3 4 5 5 4 Cygnus Happens Upon a Battle 1 2 Name the Bright Stars: 1 3 2 3 4 4 91.
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