On June 29, 2009, as part of the LCROSS Observation Campaign, Paul Mortfield, an avid amateur astronomer and frequent contributer to NASA missions, took a series of images of the LCROSS Shepherding Spacecraft and Centaur as they passed through the night sky. LCROSS is currently orbiting the Earth-moon system on its 5,592,000 mile (9,000,000 km) journey to the moon.
Capturing these images is no easy feat. The spacecraft is only 47 feet (14.5 m) long with a diameter of 10 feet (3 m). At the time of the images were taken, the spacecraft was approximately 288,100 miles (463,700 km) from Earth, traveling at a speed of 0.58 miles/sec (0.94 km/s).
The images were taken with an Apogee U16M 4Kx4K CCD Camera attached to a Ritchey-Chretian 16″f/8.9 telescope and a focal length of 3,530 mm. The image scale is 1.04 arcsec/pixel and the frames were binned 2×2. Each exposure was 60 sec in length to show enough trailing of the spacecraft.
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