XO Project
The XO Project is an international team of amateur and professional astronomers tasked with identifying extrasolar planets. It is primarily funded by NASA and the Director's Discrentionary Fund of the Space Telescope Science Institute.[1]
Duties
Preliminary identification of possible star candidates starts at the Haleakala telescope in Hawaii by a team of professional astronomers. Once they identify a star that dims slightly from time to time, the information is forwarded to a team of amateur astronomers who then investigate for additional evidence suggesting this dimming is caused by a transiting planet. Once enough data is collected, it is forwarded to the University of Texas McDonald Observatory to confirm the presence of a transiting planet by a second team of professional astronomers.
Equipment
McCullough and his team employed a relatively inexpensive telescope called an XO Telescope, made from commercial equipment, to search for extrasolar planets. This telescope consisted of two 200-millimeter telephoto camera lenses, and resembled binoculars in shape. It stands on the summit of the Haleakala volcano in Hawaii.