A balloon‐borne system for tracking the sun both in elevation and azimuth is described. The system weighs approximately 125 lb and is capable of ``pointing'' as much as 20 lb of payload at a predetermined position in the sky. Power requirements are 20 w. An accuracy in pointing of ±15 min of arc has been achieved. At some sacrifice in simplicity, this accuracy could perhaps be improved to ±5 min. Results of two flights, each attaining an altitude in excess of 100 000 ft, are given.