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Astr111 Photography Projects, Fall 2005

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Dumbbell Nebula M27, Carrie Stoddard

Dumbbell Nebula

This dumbbell nebula was the first planetary nebula ever discovered. It was discovered by Charles Messier in 1764. A planetary nebula is formed when nuclear reaction in a star's core ends and helium burning goes on in it's shell. M27 is one of the brightest nebula in our sky. Light from M27 takes about 1000 years to reach the earth.

M27 is found in the Vulpecula constellation.With a magnitude of 13.5, the central star of M27 is very bright. In the center this nebula has an extremely hot bluish subdwarf which lights the oxygen which we see as green and hydrogen which we see as red. In this image it is 5 arc minutes across. The angular size of this image is 300 acre seconds and the linear size is 1.454 light years.

References:
http://antwrp.gsfc.nasa.gov/apod/ap050603.html

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

Right Ascension (J2000) 19:59
Declination (J2000) 22
Filters used blue(B), green(V), red(R), and clear(C)
Exposure time per filter 300 seconds in BVRC
Date observed

October 6, 2005(C)
October 11, 2005(B)

October 13, 2005 (VR)