Main Page | See live article | Alphabetical index Charles Mason (1730 - 1787) was an English astronomer. Mason's early career was spent at the Greenwich Observatory near London. He worked on the surveying of the Mason-Dixon line (1763 - 1767), along with fellow-Englishman Jeremiah Dixon. The two had previously travelled around the Cape of Good Hope, where they observed the transit of the planet Venus This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.