The last photo was taken using a focal length of 110 mm and in the original photo you can clearly see three of four of Jupiter's biggest moons, the so called Galilean moons. The 4 moons are Io, Europa, Ganymede, and Callisto. When I took this photo Io (the innermost of the four) was behind planet Jupiter and therefore not visible.
In the upper left corner of that photo I've included a 100% crop of the original image of the area around Jupiter. As you can see both the planet and the moons are formed as short lines rather than spheres/dots, that's due to the long exposure of 8 seconds. During these 8 seconds, Earth rotation makes the entire sky move and this movement is recorded by the camera when using a longer focal length.
|Photo taken February 2, 2015|
|Photo taken February 3, 2015|
|Photo taken February 4, 2015|