Online Astro Calculator

Just an idea Dave:
Would it be possible to make these programs into java-based applets and suitable to upload onto a mobile phone?

At some point down the road yes, but they would need to be completely re-written. Many of these routines started life about 10 years ago as a VB application. Recently I began porting them to php to use as the web apps you see here. Porting them again to java would definitely be possible, but I still have a lot more to do with the web apps. I'm particularly interested in writing routines for satellites such as the ISS etc.

So the short answer is yes but not anytime soon.

There are several java classes of the algorithms in the book knocking about if anyone feels like writing the apps.

Well tonight I wrote some more code. This time to generate a tracks diagram for Jupiter's moons on the fly.

I'm not ready to publish the web app yet until I evaluate the processing impact on the server. However here's June 2008 diagram.

Any suggestions? Colors ok?

(Click for larger version, depending on your screen res, click again to display it full res (if your browser shrinks it))

{before you say it, I just noticed, June 31st!!}

That looks good Dave.
In temrs of colours, can I suggest something like a shade of grey instead of mustard for the background colour? The only colour then would be the moons.

Very nice Dave,

At the risk of being very picky, could you have a black and white version so you would know what you would get when printing the diagram?

Michael.

That looks good Dave.
In temrs of colours, can I suggest something like a shade of grey instead of mustard for the background colour? The only colour then would be the moons.

Yep, I'll pop one up later and we can see what it looks like.

Michael: B&W would be possible too.