When photographing stars or deep-sky objects, even the slightest movement can spoil your shot. Wind, even a gentle breeze, introduces tiny vibrations that get magnified during long exposures, causing star trails or loss of sharpness.
Unlike daytime photography, where a quick shutter can freeze motion, astrophotography often requires exposures lasting several seconds or minutes. This makes your setup extremely sensitive to any shake or sway.
So next time you see a light wind, remember it’s not just a comfort issue—it can be the difference between a crisp image and a frustrating blur.