DNALinearFit scrip PixInsight,

Pleiades Astrophoto PixInsight
12 replies•1.2k views
Alonso Uribe avatar
Alonso Uribe avatar
I am currently working on a 6 panel mosaic of M31

I have all the data I wanted, stacked and ready to begin the stitching.

I am following this tutotial https://www.youtube.com/watch?v=FkJKE-IWwTI&list=PLDNYZeyHBIFMGQ3-NWu9ek8C9yXuyA1ob&index=2

And panel #5 and 6, after running the DNALinearFit Scrip instead of the result being the image processed by the scrip I only get a black image with nothing on it.

All other 4 panels have no issues, after running the scrip I do get some image processed results.

After DNALinear, I do a GradientMergeMosaic as per the tutorial above, only panels 1 to 4 will stitch in the mosaic but not 5 and 6 

Below you can see panel 6 result after running the DNA Scrip  (not good) Panel 4 shows a good result, and panel 5 has not run through the scrip yet

Any ideas/suggestions?
Die Launische Diva avatar
Die Launische Diva avatar
I think today there are far better tools for mosaics. Search for MosaicByCoordinates or the tools from John Murphy (PhotometricMosaic and NormalizeScaleGradient). If I were you, I  wouldn't invest time on older workflows based on DNALinearFit.
Well Written Concise
John Reed avatar
John Reed avatar
I have had the best results with MosaicByCoordinates by John Murphy (PhotometricMosaic and NormalizeScaleGradient). There may still be some cosmetic issues. At the borders,  but it works better than anything I have tried.
andrea tasselli avatar
andrea tasselli avatar
Agreed 101% with Diva above.
Peter Christensen avatar
Peter Christensen avatar
I can recommend the PhotometricMosaic - works fine and gives no artefacts!
Well Written
fjwidmann avatar
fjwidmann avatar
I had good results on a nine-panel Andromeda image using NSG and MosaicByCoordinates/
Tom Engwall avatar
Tom Engwall avatar
I would also highly recommend mosaic by coordinates. That had always worked well for me.
Reinhold Wittich avatar
Reinhold Wittich avatar
I tried this workflow yesterday:·       Script/ImageAnalysis/ImageSolver for all Frames·       Script/Mosaic/MosaicByCoordinates·       GradientMergeMosaic

Thats all and it workes fine
Stephen Jones avatar
Stephen Jones avatar
This clip is very easy to follow.  https://www.youtube.com/watch?v=pBX1pMkrlLY
Leonardo Landi avatar
Leonardo Landi avatar
I just finished a 6 panel mosaic of the Sadr region. I recommend you the following workflow from Adam Block's Horizon:
-bxt
-mosaicbycoordinates
-trimmosaictiles
-photometric mosaic
The tesult is superb even with default values of each script.
VICENTE LOPEZ DE LERMA avatar
VICENTE LOPEZ DE LERMA avatar
Hola Alonso, yo sigo este vídeo con buenos resultados.   https://www.youtube.com/watch?v=xoE35tDwqKg
Alonso Uribe avatar
Alonso Uribe avatar
Stephen Jones:
This clip is very easy to follow.  https://www.youtube.com/watch?v=pBX1pMkrlLY

Thank you very much to all of you for your recommendations, following the video above gave me amazing results! I will make sure to try some of the other recommendations and maybe I can find a better simpler solution.
Well Written Respectful
Alonso Uribe avatar
Alonso Uribe avatar
VICENTE LOPEZ DE LERMA:
Hola Alonso, yo sigo este vídeo con buenos resultados.   https://www.youtube.com/watch?v=xoE35tDwqKg

Muchas gracias Vicente!

Voy a darle una mirada a el video y de seguro lo intentare. Saludos cordiales!
Related discussions
How far can you go with Narrowband Integration times arround an hour? Share your recipes and results!
To give you a little background on this post let me share what I am trying to do: One of the reasons for buying a wide lens (Askar ACL200) was to be able to play with composition for my Astro images in more widefield pictures first. I have started to...
Mosaic stitching relevant to author's panorama composition planning work.
Nov 6, 2022
Rotation shift after meridian flip (no electronic rotator)
Hello, I recently noticed that during my last two sessions of shooting that I experienced a shift in the field rotation after the meridian flip. All images taken before the meridian flip are same orientation and matches with framing assistant, and al...
Not relevant; addresses meridian flip rotation, not image stitching issues.
Oct 28, 2025