Neptune is the 8th planet from the Sun and the most distant of the "gas giants". It's diameter is about 50,000 km and it orbits the Sun at a distance of about 4.5 billion miles or 30 times the Earth to Sun distance. The atmosphere consists of approximately 74% hydrogen,25% helium,1% methane.
To the left of the planet in this image can be seen Neptune's largest moon, Triton orbiting at about 355,000 km from Neptune. The dimmer smudge just above Neptune is probably an incidental background star.
This image was a 3 second exposure under very poor seeing conditions with the MX7C and the 16" scope at efl=200".
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