Planet Neptune and its moon Triton


Neptune, the most distant planet in our solar system, was over 4.3 billion km away from us at the time of this photo. We can see its main moon, Triton on the right, next to the planet. To give you an order of magnitude, the distance between Triton and the planet Neptune is similar to that between the Earth and the Moon,

Technical details:

Telescope: Celestron Edge HD14 (focal length de 3910 mm)
Camera: Nikon D90
Exposure: 12 x 30 seconds at ISO 1600, stacked and processed
Place: Laval, Qc
Date: September 8, 2013