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Nebulas:

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M20 Trifid Nebula composite of thirty 20 second exposures at F3.3

Located in Constellation Sagittarius (the Archer), this emission and reflection Nebula is 20 arc minutes by 20 arc minutes, with a visual magnitude of 8.  It is located 6,700 light years away.

M20_s20x30_30C_Wnf.jpg (47541 bytes)

 

 

M27 Dumbbell Nebula 10 minutes at F10 binned 2x2, RGB image

Located in Constellation Vulpecula (the Fox), this Planetary Nebula is 5.8 arc minutes across, with a visual magnitude of 7.3

M27_s600_rgb.jpg (15403 bytes)

 

 

M57 Ring Nebula 20 minutes at F10 binned 2x2

Located in Constellation Lyra (the Harp), this famous planetary Nebula is the remains of a supernova that exploded is 71 arc seconds across, with a visual magnitude of 8.8.

M57_s1200_20C.jpg (2957 bytes)

 

 

M8 Lagoon Nebula composite of twenty 10 second images at F3.3

Located in Constellation Sagittarius (the Archer), this emission Nebula is 45 arc minutes by 30 arc minutes, with a visual magnitude of 6.  It is located 5,200 light years away, and is about 60 by 38 light years in size.  Embedded inside the nebula is NGC 6530, an open cluster of 113 stars, with an overall magnitude of 4.6.  The brightest star in the picture, to the left of the center, is labeled 9 Sagittarii, and provides most of the illumination for that part of the nebula.  9 Sagittarii is a hot O4 type star 23,000 times brighter than our own sun, even more than that in ultraviolet light!

M8_s10x20_30C_Wnf.jpg (38982 bytes)

 

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