Hover your mouse over each blue dot for the name of the object, or click on the dot for a detail page. This map was created using the all-sky hydrogen-alpha map produced by Douglas Finkbeiner from data collected by the WHAM, VTSS and SHASSA hydrogen-alpha surveys.
The Scorpius OB1 - east and adjacent Ara OB1A, Scorpius OB1 - west and Eagle/Omega regions are massive molecular cloud and star formation areas located immediately across a large gap inwards from the Orion Arc, and are usually described as being part of the Sagittarius arm of the Milky Way.
The eastern portion of Scorpius OB1 is dominated by the nebula Sh 2-12 (also called RCW 132, W23 or Gum 67), which at a distance of only 985 parsecs is probably the closest major Sagittarius molecular cloud to our solar system. Detailed hydrogen-alpha images reveal that Sh-12 appears as a fainter, ghostly version of the Rosette nebula. Sh 2-12 is ionised by the binary O-star (O7V + O7V) HD 159176, which lies in the star cluster NGC 6383 in the direction of Scorpius OB1.