Jupiter and his moons
This is a series of images I took of Jupiter with my Celestron NexStar 8se by holding my iPhone up to the eye piece (25mm Plössl). I used Solar Walk to work out the order of the moons. This is my updated version of the Sidereus Nuncius Medicean drawings Galileo made when he was the first human to see that there where moons orbiting other bodies in the solar system. The fourth image shows Europa as it about to be eclipsed by Jupiter. It was this observation that lead to the first estimate of the speed of light in 1676 by Ole Rømer. This is the c in E=mc², the most fundamental constant of the universe in our current understanding of physics. The orbital periods of the moons are: Io 1.8 days Europa 3.5 days Ganymede 7 days Callisto 16.7 days
2014 March 15, 20:26 PDT, RA: 06h 47m 32.8s, Dec: +23° 08’ 02” Ganymede, Europa, Io, Jupiter, Callisto
2014 March 16, 20:27 PDT, RA: 06h 45m 05.5s, Dec: +23° 30’ 09” Europa, Jupiter, Io, Ganymede, Callisto
2014 March 17, 20:27 PDT, RA: 06h 49m 23.1s, Dec: +23° 16’ 21” Io, Jupiter, Europa, Callisto, Ganymede
2014 March 18, 20:49 PDT, RA: 06h 46m 37.2s, Dec: +23° 14’ 00” Jupiter, Europa (the bump at 3 o'clock with respect to Jupiter), Callisto, Io, Ganymede
2014 March 19, 20:59 PDT, RA: 06h 48m 04.1s, Dec: +23° 26’ 12” Europa, Io, Callisto, Jupiter, Ganymede

Jupiter and his moons

This is a series of images I took of Jupiter with my Celestron NexStar 8se by holding my iPhone up to the eye piece (25mm Plössl). I used Solar Walk to work out the order of the moons.

This is my updated version of the Sidereus Nuncius Medicean drawings Galileo made when he was the first human to see that there where moons orbiting other bodies in the solar system.

The fourth image shows Europa as it about to be eclipsed by Jupiter. It was this observation that lead to the first estimate of the speed of light in 1676 by Ole Rømer. This is the c in E=mc², the most fundamental constant of the universe in our current understanding of physics.

The orbital periods of the moons are:

2014 March 15, 20:26 PDT, RA: 06h 47m 32.8s, Dec: +23° 08’ 02”

Ganymede, Europa, Io, Jupiter, Callisto

2014 March 16, 20:27 PDT, RA: 06h 45m 05.5s, Dec: +23° 30’ 09”

Europa, Jupiter, Io, Ganymede, Callisto

2014 March 17, 20:27 PDT, RA: 06h 49m 23.1s, Dec: +23° 16’ 21”

Io, Jupiter, Europa, Callisto, Ganymede

2014 March 18, 20:49 PDT, RA: 06h 46m 37.2s, Dec: +23° 14’ 00”

Jupiter, Europa (the bump at 3 o'clock with respect to Jupiter), Callisto, Io, Ganymede

2014 March 19, 20:59 PDT, RA: 06h 48m 04.1s, Dec: +23° 26’ 12”

Europa, Io, Callisto, Jupiter, Ganymede