NGC 6914 is an emission/reflection nebula. It is found in the constellation Cygnus and is approximately 5000 light years away. This nebula is made up two blue reflection clouds, which are found in the center of the picture. There is also a red emission cloud that is found in the upper left corner. Emission Nebulae are clouds of high temperature gas. Reflection Nebulae are clouds of dust that reflect the light of a nearby star. They both are usually the location of recent and ongoing star formation. Both of these Nebulae are frequently seen together.
If you look in the lower, central portion of the picture you can clearly see NGC 6914. The blue reflection clouds are reflecting the light of blue stars. As stated earlier, this type of nebula is frequently a place where new stars are born, and many new stars are blue in color. The red emission cloud in the upper left portion of the screen is a hydrogen cloud. We know this because red is the primary emission line in hydrogen. The linear size of the image is about 22.5 light years across and 15 light years top to bottom.
Arnett, Bill. "The Web Nebulae." The Nine Planets. Feb. 1997. Web. 6 Dec. 2010. http://astro.nineplanets.org/twn/types.html.
Gendler, Robert. "NGC 6914, NGC 6914A (vdB 131), NGC 6914B (vdB 132) ." The Universe In Color. Web. 6 Dec. 2010. http://www.robgendlerastropics.com/NGC6914text.html
|Right Ascension (J2000)||20:24:42|
|Filters used||Clear(C) Red (R) Blue (Blue) Green (V)|
|Exposure time per filter||300 seconds in C,R,B, V.|
10/28/2010 in C,R,B, V.