After studying in the Netherlands, he was appointed lecturer at the University of Uppsala in 1732 to fill the vacant position of Anders Celsius then on his grand tour of European observatories. From 1737 onwards, he studied together with Celsius the aurora phenomenon and a number of astronomy subjects (solar eclipse, comet like the one of 1744, latitude measurements).
In 1732, after studying in the Netherlands, he was appointed as a lecturer at the University of Uppsala to succeed Anders Celsius. From that year onwards, he collaborated with Celsius on aurora studies and other astronomical topics such as solar eclipses and comet observations (like the one in 1744), as well as latitude measurements.