David H. Staelin

David Hudson Staelin (1938 – 2011) was an American astronomer, engineer, and entrepreneur. He co-discovered the Crab nebula pulsar in 1968, and was Principal Investigator for earth-remote-sensing satellite instruments. He was a co-founder of Environmental Research and Technology, Inc. and the founding chairman of PictureTel Corp., one of the first videoconferencing firms. Provided by Wikipedia