. . . . . . . . . . . . "Paul Boltwood (1943 \u2013 September 25, 2017) was a Canadian amateur astronomer. He was engaged in developing hardware and software for deep sky imaging and in research of brightness variations in active galactic nuclei. He was also acknowledged for his studies of near-nucleus activity in Comet Hyakutake. Boltwood died in Stittsville, Ontario."@en . . "Paul Boltwood (1943 \u2013 September 25, 2017) was a Canadian amateur astronomer. He was engaged in developing hardware and software for deep sky imaging and in research of brightness variations in active galactic nuclei. He was also acknowledged for his studies of near-nucleus activity in Comet Hyakutake. Boltwood died in Stittsville, Ontario."@en . . . . . . . . . . . . . . . . . . "1104452536"^^ . . . . . . . . "Paul Boltwood"@en . . . . . . . "8945"^^ . . . . . . . . "2000"^^ . . . . . . . . . . . . . . "12658744"^^ . . . . . . . . . . .