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Getting started with Astap and NINA

2026-01-21
2026-01-29
  • Michael Sullivan

    Having issues with 3 point polar align in NINA. I have astap installed with D80 data base as primary solver. Platesolver 3 for Blind solver. Took me 3 hrs. to get 5 positive measurements, 3 for Azimuth, Altitude and total error. The other 2 were for re adjustments for azimuth and altitude. I have a 12" RC focal length @ 1906 with focal ratio @ 6.28. camera 3.76um. Getting around 60 to 100 focused stars when doing alignment. I have tried different parts of the sky. Do I need to be pointing at a DSO or a particular object? Spent about 5 hours trying to accomplish this the other night. I have triple checked all settings, everything seems to OK. Don't know what Im missing. Any help would be grateful. Also I cannot get Plate solver to work at all.

     
  • han.k

    han.k - 2026-01-21

    Hi Michael,

    For polar alignment first the solver should work. I understand it doesn't work for you. Can you share the last failed image? You can find it under:

    Nina saves the images which failed to solve here:

    %localappdata%\NINA\PlateSolver\Failed

    Share the FITS file and the .imi file. You could add it to your reply in this forum.

    Han

     
  • Michael Sullivan

    INI file, upload not loading. stating file to large 51,000 kb

     
  • Michael Sullivan

    fits : 413 Request Entity Too Large

     
  • Michael Sullivan

    So I opened the fits files and the mount wasnt tracking in these pics. so i understand those issues. Is there a file location where good images were taken and alignment failed?

     
  • han.k

    han.k - 2026-01-22

    Only the last image failed to solve is stored. The txt files are unknownto me, maybe from Platesolve2.

    The .ini files contain:
    PLTSOLVD=F
    CMDLINE="C:\Program Files\astap\astap.exe" -f "C:\Users\PrimaLuceLab\AppData\Local\NINA\PlateSolver\ukxahoom.3zq.fits" -fov 0.471512 -z 0 -s 500 -r 60 -ra 0 -spd 90
    DIMENSIONS=6252 x 4176
    ERROR=Not enough stars.

    If you are doing polar alignment, the solving will not work since the position send to ASTAP is RA=0, DEC=0 (SPD, south pole distance=90). So it looks like the mount position is unknown in Nina. Is the mount controlled by Nina? You could bypass it by setting the search range for solving to more then 90 degrees but it would be much better if the mount is connected and the mount position close to the celestial pole is read making it much easier for the solver.

    So fix the mount connection to Nina if possible.

    The field-of-view (FOV) is specified as 0.4715 degrees. I need an image to check that. You could upload an image to nova.astrometry.net and send my the link, so I can check the FOV and therefore your Nina settings. You could also try to solve an image in ASTAP by using blind solving like this: https://www.hnsky.org/astap.htm#solvable

    Han

     
  • Michael Sullivan

    will try settings and get back to you. Thanks Mike

     
  • Michael Sullivan

    got everything working, just needed to make sure tracking was on. it kept turning off in my temma ascom. thanks for your help.

     

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