Infrared ash and full moon

Sometimes, strange things occur in astronomy and this was one of those nights. While observing in Texas, we realized that our instruments recorded almost no light but the sky was cloud-free. I therefore went outside to take infrared images which is when we finally realized what was going on. Seen here, the pink glow in the sky were created by ash particles from a recent forest fire that were now spread evenly across almost the whole sky. The full moon provides illumination for the ground while the sky appeared utterly dark in the visible.