Stellarium

Coordinates extracted for a specific object ?

Asked by Guillaume Devoyon

Hello

I'm creating a radiotelescope with a 2,4m dish.
For moving it up and down and left and right I have installed ham radio rotators and others stuff.
I have already my tracking system with indication on position and so on... perfect.

The telescope tracking plugin allow only to discuss directly on specific format to directly serial ports. It will not fit my need because i'm based on ham radio rotators protocols.
Is there a way to extract regulary position of a specific object on a file (I search with no success)? a port ? I would for so be able to format datas to fit my needs and push them directly to my tracker system or to hamlibs. Creating a sort of proxy ?

How would you do this ? Would you have some recommends ? I'm not developper but a Linux infrastructure man so I speak perl and bash (i'm of course on Linux)

Regards
F8ARR - Guillaume Devoyon

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gzotti (georg-zotti) said : 		#1

Aside from the telescope control plugin there is the older telescope server. Maybe you can put this to work?

See http://www.stellarium.org/wiki/index.php/Telescope_Control

If you succeed, you may want to give a short instruction report for the wiki.

Sorry I cannot give more info, my EQ3/EQ6 work with the plugin...

Good luck! Georg.

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Guillaume Devoyon (guillaume-e) said : 		#2

Hello

I made some tests but I my miss something.
I created a pipe on a server 192.168.0.200 witch is connected to my tracking system.
Stellarium is running on remote server.

Server side :
f8arr@LR-F8ARR:~$ nc -klv 10000
Listening on [0.0.0.0] (family 0, port 10000)

On stellarium i made change on my $HOME/.stellarium/config.ini
[astro]
...
flag_telescope_name = true
flag_telescopes = true
...
...
[telescopes]
1 = Parabole:TCP:192.168.0.200:10000:50000
...

I try to track with <CTRL><1> but nothing change on stellarium. I had a look on log.txt with no more information. On server side, NC does not see any incoming connection.
Is there a way to debug?

Regards.
Guillaume - F8ARR
nb: I'm ok to write some wiki tuto once ok ;-)

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Guillaume Devoyon (guillaume-e) said : 		#3

Hello

I do an update.
I have been able to follow the traditional steps with the TelescopeServerDummy.
I'm able to permit a communication between stellarium and my tracker naturally following the natural features.

The problem is that all ham radio rotators and similars are using lat/long coordinates.
Using the natural features we receive coordinates in j2000 format. If I want using them i have to convert them to lat/long that is not so easy.
This is really frustrating because on screen, while pointing an object we have information readable in the good expected form. ;-)

if you think on a "hack" on howto extract lat/long it would be good.
Just a thing, if needed, i can compile scripts or anything, my actual pc is a sandbox. (Ubuntu 14.04)

Still searching ;-)

Regards
F8ARR

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gzotti (georg-zotti) said : 		#4

With lat/long, do you mean altitude/azimuth? I have no idea of ham radio rotators. You could give your antenna an equatorial tilt, or just convert the coordinates in an adapted TelescopeServerDummy. Formulae e.g. from http://en.wikipedia.org/wiki/Celestial_coordinate_system#Equatorial_.E2.86.90.E2.86.92_horizontal

Can you help with this problem?

Provide an answer of your own, or ask Guillaume Devoyon for more information if necessary.

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