Jupiters Moons

[CSM]

Having spent an hour or so webcamming Jupiter and watching one of the moons disappear behind it, I went indoors to find out which moon it was. Another one was also visible and by chance I looked in the March Sky at Night mag to see which moons these were. Hmm - nothing shown on the 3rd so went to Stellarium which showed Europa behind eclipsed and Io not far away. Back to the mag and yes, this is shown for the 4th!

[John]

This Java applet is good for working out the Jovian moon positions:

http://www.skyandtelescope.com/observing/objects/javascript/jupiter

And this one shows you when the Great Red Spot will cross the centre meridian of the planet:

http://www.skyandtelescope.com/observing/objects/planets/3304091.html?page=1&c=y

[AndyWB]

For iPhone users, I've found the app JupiterMoons pretty nice - it shows what they should look like around Jupiter (and can flip for Newtonians), and has a list of daily events (transits, occultation, eclipse) including the Great Red Spot transit times. .

[Jiggy 67]

For iPhone users, I've found the app JupiterMoons pretty nice - it shows what they should look like around Jupiter (and can flip for Newtonians), and has a list of daily events (transits, occultation, eclipse) including the Great Red Spot transit times. .

An excellent app, nothing else is needed for Jupiter and its moons

[John]

An excellent app, nothing else is needed for Jupiter and its moons

Well, an iphone presumably ?

Not everybody has one or wants to use one when doing astronomy

[Bizibilder]

If you only have a 'puter then WinJupos (freeware) has an excellent ephimeris for Jupiter, its Moons and all the other planets as well.

[rkc]

I was watching a transit of Io tonight - strangely Stellarium (on my linux box) seemed to be convinced that it was already transiting, when I could quite clearly see that it was not yet. Jupiters Moons app and SkySafari both were spot on though.

A second thumbs-up for JupitersMoons app from me.

[AndyWB]

Not everybody has one or wants to use one when doing astronomy

Aye, and they're a bit bright, even in the alleged "night mode" - but planning astronomy, that's a different matter.

[Qualia]

I've found this to be an extremely handy tool and great piece of freeware for swating up on Jupiter.

[Jiggy 67]

Well, an iphone presumably ?

Not everybody has one or wants to use one when doing astronomy

Yeh I get that, but if you have an IPhone and are wondering which dot is which at the ep then this will tell you. It will also warn you, in advance of transits, GRS transits and other events. It has enhanced my experiance by informing what is happening in the fov. By the way, a similar one, also by Sky and Telescope has been released for Saturn, called..........Saturnsmoons

[JonF]

Any similar Android apps?

[Gomtuu]

Xeecos Jupiter guide is free for iPhone and works well

https://itunes.apple.com/gb/app/jupiter-guide/id432767581?mt=8

[earth titan]

'Where is IO' is a free app for Android. Doesn't give locations but it tells you when moons are going to cross.

Typed by me on my fone, using fumms... Excuse eny speling errurs.

[cantab]

I was watching a transit of Io tonight - strangely Stellarium (on my linux box) seemed to be convinced that it was already transiting, when I could quite clearly see that it was not yet. Jupiters Moons app and SkySafari both were spot on though.

Turn on light travel time delay or whatever the option's called.

[skir]

Any similar Android apps?

I'll second that. I had a look at where is io but didn't like it really, though granted it is free.

Sent from my Nexus 7 using Tapatalk 2

[Guy Wells]

Starry Night on the laptop does it for me.