First Image of the Moon Taken by a U.S. Spacecraft
Ranger 7 took this image, the first picture of the moon by a U.S. spacecraft,
on July 31, 1964 at 13:09 UT (9:09 AM EDT), about 17 minutes before impacting
the lunar surface. The area photographed is centered at 13 S, 10 W and covers
about 360 km from top to bottom. The large crater at center right is the 108 km
diameter Alphonsus. Above it is Ptolemaeus and below it Arzachel. The terminator
is at the bottom right corner. Mare Nubium is at center and left. North is at
about 11:00 at the center of the frame. The Ranger 7 impact site is off the
frame, to the left of the upper left corner.
The Ranger series of spacecraft were designed solely to take high-quality
pictures of the moon and transmit them back to Earth in real time. The images
were to be used for scientific study, as well as selecting landing sites for the
Apollo moon missions. Ranger 7 was the first of the Ranger series to be entirely
successful. It transmitted 4,308 high-quality images over the last 17 minutes of
flight, the final image having a resolution of 0.5 meter/pixel.
Ranger 7 was launched July 28, 1964 and arrived at the moon on July 31,
1964.
Image Credit: NASA
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
ayabaca@hotmail.com
ayabaca@yahoo.com
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