Shedding a New Light on the Universe
What Does RXTE Look At Activity Answer
This map is labeled oddly because it is in Galactic Coordinates. Because we view the sky as being curved, when we project it onto a map, we label it much like we label a globe. The x and y coordinates are really latitude and longitude, and measured from -90 to 90 degrees and from 0 to 360 degrees, respectively.