UPDATE June 2011: A cerberus (3 headed dog) was patrolling the area and muggled the cache. Final has been switched to a silver micro bison tube attached to a tall street sign 95 feet down the street from the original coordinates. It should be easy to find. You can also add +0.004 mins to North and +0.029 mins to West to obtain the new coordinates for the final.
Our hero started out alone on his journey North one dark night to seek his fair maiden. His name was Centaurus, and while his kind was feared by most creatures, this centaur was kind and gentle. He carried with him the only treasure he owned, Lyra, and he played his music on it hoping to lead his maiden home. The first night there were Zero stars in the sky, but he knew if he ventured to the ocean he could cross its wide expanse on the back of Delphinus, the most majestic of all dolphins, and Octans would guide them to the wise sea goat, Capricornus. The sea goat gave them this magical wisdom "beware of Canes Venatici as you head West. If you survive the hunting dogs look to the most ancient constellation in the sky, Bootes, and under its light at midnight you shall meet princess Andromeda. Good luck and may you take with you the strength of the ram Aries and the courage of Hercules." With that our hero departed on his quest alone, surviving the hunting dogs with ZERO injuries. But another night came and went and there were ZERO stars in the sky. Finally, as the clouds parted on the third night our hero looked up to the mid October sky and the princess came to him. She pointed into the distance, and there he finally saw her, Virgo, the beautiful maiden, shining brightly in the night.
You can check your answers for this puzzle on Geochecker.com.
reference: http://www.astro.wisc.edu/~dolan/constellations/constellations/Centaurus.html