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Astr111 Photography Projects, Fall 2005

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Dumbell Nebula, Ashley Brown

Dumbell Nebula

The Dumbell Nebula was discovered on July 12,1764 by Charles Messier. It was the first planetary nebula ever to be discovered. It is also known as M27. This nebula is in the constellation Vulpecula in the Milky Way Galaxy. The Dumbell Nebula is said to be 1,200 light years away, although the Hubble Space Telescope is currently being used to find out the exact distance.

The Dumbell Nebula, as described by Charles Messier, is an oval nebula without stars. In some images, it is possible to see a star in the very center of the nebula. In the photo above, you can see a large amount of oxygen which is represented by green. It is also possible to see a redish gas around the outside of the nebula, which is caused by hydrogen. The diameter of the Dumbell Nebula is 6 arc minutes, while there is a faint halo that reaches out to approximately 15'.

References:
http://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search?Dumbell+Nebula

http://www.seds.org/messier/m/m027.html

http://en.wikipedia.org/wiki/messier_027

Right Ascension (J2000) 19:55:50
Declination (J2000) +22:44:02
Filters used blue(B), green(V), red(R), and clear(C)
Exposure time per filter 5x60 seconds in CR, 300 seconds in BV
Date observed

October 6, 2005 (C)

October 11, 2005 (B)

October 13, 2005 (RV)