Mcdonald Observatory Wildfires
With wildfires bearing down on the McDonald Observatory, the Texas Forest Service undertook controlled burns on April 17 to get rid of fuel on the mountains in West Texas. This would starve the Rock House wildfire of fuel should it double back toward the observatory.
In the above image, Black Mountain is burning. The Hobby-Eberly Telescope dome is at right. Above it, the bright line on the right is the wildfire which broke through a burn-out line on Sunday afternoon. The bright line on the left is the front of a back-fire set to stop that portion of the wildfire. Silhouetted by the back-fires on Black and Spring (to the left) Mountains is Guide Peak now with only small pockets of active fires.