William Cranch Bond

William Cranch Bond (September 9, 1789January 29, 1859) was an American astronomer, and the first director of Harvard College Observatory.

Contents

Upbringing

William Cranch Bond was born in Falmouth, Maine (now Portland, Maine) on September 9, 1789. When he was young, his father, William Bond, established himself as a clockmaker after a failed business venture; trained by his father and aided by his penchant for engineering, W. C. Bond built his first clock when he was fifteen years old. He eventually took over his father’s business, becoming an expert clockmaker himself.

Amateur Astronomer

In 1806, when he was seventeen years old, Bond saw a solar eclipse. Soon thereafter, he became an avid amateur astronomer. When he built his first house, Bond made its parlor an observatory, complete with an opening in the ceiling out of which his telescope could view the sky.

Trip to Europe

In 1815, Bond traveled to Europe, commissioned by Harvard University to gather information on European observatories. In 1819, soon after he returned from Europe, Bond married his first cousin, Selina Cranch, who bore him four sons and two daughters. After her death in 1831, Bond married her older sister, Mary.

Harvard Observatory

In 1839, Bond was allowed to move his personal astronomical equipment to Harvard and serve as its (unpaid) "Astronomical Observer to the University." Later, in 1843, a sun-grazing comet aroused enough public interest in astronomy that Harvard was able to raise $25,730 towards the construction of a state-of-the-art observatory. Bond designed the building and the observing chair (both of which are still in working order today), and Harvard bought a fifteen-inch German-built refracting telescope, equal in size to the largest in the world at the time. The telescope was first put to use on June 24, 1847, when it was pointed to the moon.

Discoveries

  • Independently discovered the Comet of 1811
  • Bond and his son George Phillips Bond discovered Saturn's moon Hyperion; it was independently co-discovered at the same time by William Lassell in Britain, and both are given credit.
  • Father and son were the first to observe Saturn’s inner, or “crape,” ring when they pointed Harvard’s telescope towards Saturn in 1850.
  • Working with J. A. Whipple, the Bonds pioneered astrophotography, taking the first daguerreotype image of a star (Vega, in 1850) ever taken from America. (In all, the threesome took between 200 and 300 photos of celestial objects.)

Legacy

A number of celestial objects have been named in Bond's honor. A few of them include:

  • A crater on the moon is named "Bond"
  • A region on Hyperion is called the "Bond-Lassel Dorsum"
  • A "Bondia" asteroid.

External links

References

fr:William Cranch Bond sl:William Cranch Bond

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