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  1. #1
    Jimk33's Avatar
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    Default Help Needed with Astrotortilla Annotation Output



    There is already a growing thread about how to setup and use Astrotortilla for scope alignment (Need help with AstroTortilla), so I'm starting a new thread about image annotation with Astrotortilla.

    I understand that AT can create an annotation identifying objects that are in a particular astrophotograph, but can't figure out how to make this happen.

    I removed "-no-plots -N none" from the Custom Options Command line, and AT reported that it solved an image of M42 (the Orion Nebula) in 42 seconds, and created an annotation overlay, but I can't find it on my system. I'm not even sure the overlay was actually created, or what it would look like or what it would be called, so searching for it is kind of pointless.

    Has anyone managed to use Astrotortilla to annotate astro photographs, and if you did, how did you accomplish that?

    Also; here is a link to a document with some information about configuring Astrotortilla. AstroTortilla / Home / Configuration I've read it, but still can't figure out how to get an annotated plot produced.

    Thanks for Any Help,
    Jim
    Scope & Mount: Orion 8" F4.9 w/Moonlite motorized focuser, Atlas mount; Astrotech 65 EQD refractor guidescope w/SSAG, Camera & Filters: Full Spectrum Canon T3, Baader Ha, Oii and Oiii 2" filters.
    Software: StellariumScope, Stellarium, EQASCOM, Astrotortilla, BYEOS; PHD2; Pixinsight, Splashtop
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  2. #2
    Jimk33's Avatar
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    Default Re: Help Needed with Astrotortilla Annotation Output

    No one has ever tried to get an annotated image out of Astrotortilla?
    Scope & Mount: Orion 8" F4.9 w/Moonlite motorized focuser, Atlas mount; Astrotech 65 EQD refractor guidescope w/SSAG, Camera & Filters: Full Spectrum Canon T3, Baader Ha, Oii and Oiii 2" filters.
    Software: StellariumScope, Stellarium, EQASCOM, Astrotortilla, BYEOS; PHD2; Pixinsight, Splashtop
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  3. #3
    ghswen's Avatar
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    Default Re: Help Needed with Astrotortilla Annotation Output

    You are 1/2 way there.

    Did you create the working directory in the .cfg file?

    The astrotortilla.cfg should be located in C:/users/"yourusername"/appdata/local/astrotortilla.sf.net/AstroTortilla/astrotortilla.cfg

    You can open the file using notepad or wordpad.

    My suggestion is to open it then do a 'save as' and rename it to astrotortilla1.cfg

    Locate the [AstroTortilla] heading and add the following

    work_directory = C:\tmp

    save the .cfg file

    open the c:\ drive and add a "tmp" file folder. (that's where your plotted images will be placed.)

    when you open AstroTortilla the next time you need to go to File / loadsettings and open the new .cfg file you created. This will load the new settings that include the working directory. (note it wont show up in the 'solver' area of the display, but it's there.)

    Keep in mind I'm still playing with settings but here's the end result for my test image with the plot.
    (note: these were resized so I could upload them. They are actually much larger files.


    Mel15test5sec_001-ngc.pngMel15test5sec_001-indx.pngMel15test5sec_001-objs.png
    Gordon
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  4. #4
    Jimk33's Avatar
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    Default Re: Help Needed with Astrotortilla Annotation Output

    Quote Originally Posted by ghswen View Post
    Locate the [AstroTortilla] heading and add the following

    work_directory = C:\tmp

    save the .cfg file

    open the c:\ drive and add a "tmp" file folder. (that's where your plotted images will be placed.)

    when you open AstroTortilla the next time you need to go to File / loadsettings and open the new .cfg file you created. This will load the new settings that include the working directory. (note it wont show up in the 'solver' area of the display, but it's there.)
    Thanks Gordon. What I was missing was manually loading the new config file. I was revising the default astrotortilla.cfg file, getting no results, and then finding that the changes I made to the default file had been removed. If I click on "file/load" it works.

    Do you happen to know what the red and green circles mean? I figure they're the targets that AT is solving, but wonder why red and green. I noticed than an annotated resolution of a photo I took of the Plieades had green circles in the center of the stars and red circles slightly off of that.

    I still can't generate or at least find a log file, though. I have [log_file = M:\tmp\Log-File.txt] and [log_level = INFO] under the [ASTROTORTILLA] section, but can't find the log file. Any thoughts what I'm missing with that?

    Thanks again.
    Scope & Mount: Orion 8" F4.9 w/Moonlite motorized focuser, Atlas mount; Astrotech 65 EQD refractor guidescope w/SSAG, Camera & Filters: Full Spectrum Canon T3, Baader Ha, Oii and Oiii 2" filters.
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  5. #5
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    Default Re: Help Needed with Astrotortilla Annotation Output

    Hi Jim,

    As I'm sure you are aware, one of the big problems with Astrotortilla at the moment is the lack of information on setup and functions. I did a bit of digging and found that the astrometry.net website has quite a bit more info. Since they are the 'backend' of Astrotortilla they had quite a bit more detail of the inner workings.

    Here's what I found:
    ************************************************** ************************************************** *
    In the images below, the red circles are stars our algorithm automatically detects in the image, and the green circles are stars from our master index which appear in the query image. Nebulae, constellations and other objects can be automatically overlayed on the image after it has been solved.
    ************************************************** ************************************************** ****
    and if you want to 'experiment' with the 'plot' settings in the cfg file:
    584 * plotxy: plots circles, crosses, etc over images.
    585
    586 * plotquad: draws polygons over images.
    587
    588 * plot-constellations: annotates images with constellations, bright
    589 stars, Messier/NGC objects, Henry Draper catalog stars, etc.
    590
    591 * plotcat: produces density plots given lists of stars.

    My suggestion would be to try them one at a time and check results.

    There's quite a bit of 'under the hood' details in the README file of astrometry.net stuff.

    README in trunk/src/astrometry
    Gordon
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  7. #6
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    Default Re: Help Needed with Astrotortilla Annotation Output

    You can run the 'plot-constellations' command from the windows command line. This allows the creation of and annotation overlay image and allows the adjustment of the font size.
    To do this, first add the 'c:\cygwin\bin' and 'c:\cygwin\lib\astrometry\bin' (adjusting for your configuration as necessary) folder to the 'Path' environment variable in your windows profile (You can find your environment variable in 'system properties' in the windows control panel. Once changed you will need to sign out and back in again to make the new configuration active.
    Now you can run the astrometry.net commands individually from the windows command line.
    If you have already solved an image using astrotortilla, open a command line and change to that directory. Once there, get a folder list (dir) and look for the .wcs file that astrotortilla created. now run
    plot-constellations -w <wcsfilename>.wcs -v -N -C -B -n 2 -f 50 -o AnnotationOverlay.png
    Replacing <wcsfilename> with the filename you noted in the previous step.
    The -f 50 option sets the font size to 50. Adjust this to get the size that you want.
    The command creates a PNG file (AnnotationOverlay.png) that you can layer over your original image.
    Run the plot-constellations command with no parameters to get a list of all of its options.

 

 

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