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Astr111 Photography Projects, Fall 2009

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Moon , Camilla Page

Moon

The Moon has been observed for as long as there have been human beings on the Earth. People from every time period have been captivated by its beauty. It is the Earth's only satellite. The Moon's diameter is 3,476 km, and the average distance to the Moon is 384,400 km. The Moon has many craters which range in size from less than a meter in diameter to more than 200 km in diameter. Other significant surface features of the Moon include its sinuous rilles, which are winding valleys. Galileo was the first astronomer to classify the two types of lunar surface; he called the Moon's dark regions maria and the light regions terrae. Lunar samples have shown that the maria are made of solidified lava, which shows that volcanic activity occurred on the Moon long ago.

The above picture is of a waning gibbous Moon. This picture is a mosaic that was pieced together from eight different picture fragments, and the brightness scale of each of the fragments was adjusted to create a uniform brightness. The Moon's many craters are evident in the picture. The new craters are surrounded by light ejected material, and they have rays pointing out from them. The rays indicate how far the ejected material was thrown at the time of impact. The old craters do not have light ejected material surrounding them because their ejected material has been covered up over a long period of time. The shape of the Moon's craters can be determined by the lunar relief in this picture. Many of the craters in the shadowed area of the Moon (the far right side) catch the Sun's light on their right rims, thus indicating that they are bowl-shaped. The dark colored spots are maria. The maria are mostly in the northern half of the Moon, but a few spots dip down into the southern half as well. According to the Sky software, the distance to the Moon on November 6, 2009 (the date this picture was taken) was 369,398.5 km.

References:
Fix, John D. Astronomy: Journey to the Cosmic Frontier. 5th ed. Vol. 1. The McGraw-Hill Companies, 2007. 184-97. Print.

TheSky Astronomy Software.

Right Ascension (J2000) 05:54:32
Declination (J2000) +25:09:07
Filters used blue(B)
Exposure time per filter .13 seconds
Date observed

November 6, 2009 at 4:35 UT (B)