Hello,
Here is an image of the gas giant Neptune with its largest moon, Triton taken with a Celestron C9.25 from our back yard in Brisbane. I have included some screen prints from The Sky X and SkyTools 3 Pro for further information. Neptune and Triton were separated by 13.7 arc secs when the image was captured.
Imaging details:- Celestron C9.25 F10 with Tak x1.6 Extender giving an efl of 3760mm at F16.
- SBIG ST2000XM CCD camera.
- LRGB 10x15 secs each.
- Brisbane Qld, Australia.
- Saturday 28th July 2012 from 10:49-11:07pm AEST (UT+10)
Background information:
Neptune is the eighth and farthest planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and is 17 times the mass of Earth. On average, Neptune orbits the Sun at a distance of 30.1 AU, approximately 30 times the Earth–Sun distance.
Triton is the largest moon of Neptune, with a diameter of 2,700 kilometres. William Lassell, a British astronomer, discovered Triton on October 10, 1846 scarcely a month after Neptune was discovered. Triton is colder than any other measured object in the Solar System with a surface temperature of -235° C (-391° F).
Cheers
Dennis