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Message started by Tony on 12/30/14 at 13:23:49

Title: Proper Motion Simulator
Post by Tony on 12/30/14 at 13:23:49

Here's a new program designed to simulate the proper motion of stars.
http://orbitsimulator.com/gravitySimulatorCloud/properMotionHome.html

If you find any interesting uses, or have comments, or bugs to report, do so here.

Enjoy!

Title: Re: Proper Motion Simulator
Post by frankuitaalst on 01/01/15 at 14:13:17

Wonderful achievement Tony !
Congrats !
Must have been a hell of a job to code this .
Very nice features , such as the travelling through space , one really thinks being in the middle of a Stark Trek episode at warp 10 !
Amazing .
One feature I'm missing here is : indication of the field of view ( I mean : at what angle one is viewing to the stars ? ) , second : what is the distance one has travelled from the solar system ?

When travelling towards , I think it was Puppis , I saw at maximum brightness a moving object using the catalog , as tekst,, but it didn't show up as a point or circle when I deselected the catalog .  I don't understand.

Edit : forgot to ask : is there any chanche  this beauty will be available as a download ?  

Title: Re: Proper Motion Simulator
Post by Tony on 01/01/15 at 14:42:00

Thanks Frank.
I'll add field of view later, probably by superimposing RA and Dec lines on the sky.  Because of fish-eye, its more complicated than just saying the entire screen represents 30 degrees.

I'll add a distance interface later.  For now, d = vt.  Just multiply the ship speed and the (year - 2000) to get your answer in light years.

I got that 'Star Trek' feeling too.  If you want an extended journey without exiting the densely-populated region of stars, choose the last option: "Tour".  This makes you circle the Sun at whatever radius you specify (default is 400 LY), keeping you in the Sun's neighborhood indefinitely.

Title: Re: Proper Motion Simulator
Post by Tony on 01/01/15 at 14:48:57

Regarding the star you couldn't see, but it still showed its name moving,  increase the minimum star size from 0.2 to some higher value.  The star just isn't bright enough to show up at those settings.

Available as a download?
If you want to run it and you're not online, you can simply save the web page to your computer.

Title: Re: Proper Motion Simulator
Post by frankuitaalst on 01/01/15 at 14:59:47


Tony wrote:
Regarding the star you couldn't see, but it still showed its name moving,  increase the minimum star size from 0.2 to some higher value.  The star just isn't bright enough to show up at those settings.
.

ok , thanks .
It wasn't clear to me this input field could be changed . It works .
BTW : best wishes for 2015 , Tony !
The year seems to have a good start yet !

Title: Re: Proper Motion Simulator
Post by frankuitaalst on 02/18/15 at 14:24:58

Haven't checked this out in the simulator :
http://www.sci-news.com/astronomy/science-scholzs-star-binary-system-outer-oort-cloud-02508.html

Title: Re: Proper Motion Simulator
Post by Tony on 02/18/15 at 20:06:44

I don't think that star is included in the catalog I use. :-[.  I can't find a Hipparcos ID for it.
It's described as newly-discovered, and even at closest approach to the Sun, it was only mag 10.

Title: Re: Proper Motion Simulator
Post by Tony on 10/17/15 at 22:58:52

https://www.youtube.com/watch?v=8p9qhAZx8vU
Using the Proper Motion Simulator, I made a YouTube of the Big Dipper's proper motion over 300,000 years.

Title: Re: Proper Motion Simulator
Post by Tony on 10/24/15 at 19:51:22

https://www.youtube.com/watch?v=fQiln6enAfY
Here's a YouTube of a journey to Orion.

Title: Re: Proper Motion Simulator
Post by Tony on 11/01/15 at 17:47:50

There have been more improvements to the Proper Motion Simulator, including adding lines of RA and Dec.
You can also append starting conditions to the URL.  This permits me to make a list of interesting simulations without uploading each one individually, such as I've done here:
http://orbitsimulator.com/pm.html

Title: Re: Proper Motion Simulator
Post by Tony on 01/31/16 at 14:02:58

http://orbitsimulator.com/gravitySimulatorCloud/properMotionHome.html
More improvements:  Asterism lines, Constellation names, Constellation boundaries.

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