Hi @todono1x,

Okay, I should do some more testing with these extreme settings to see if I can trigger the Array errors you mention.

I’ll see if I can make the registration engine a bit smarter. Meaning, if quadrilaterals don”t work, automatically try triangles..

For such a big mosaic, I think I can improve the distortion models a bit more to…[Read more]

I ve been trying the triangles and it just hangs up. Not sure why but lots of Array errors.

The settings you suggested in your last mail worked best, but at a lower star amount 10000 was too much and it hung. I think I used 7000 in the end. I have  no RMS values for you at this time. I would need to re run the experiment.

Excellent @todono1x! Do you know which settings exactly gave you the best result?

I am focusing now on speeding APP up, that has higher priority now….

But I am confident that I can apply some more improvements in the registration engine for mosaics like this. So it’s on my list to try to improve this further.

Those settings helped on the re run. I m posting the 5×5 image. There is only one area on the right hand side of some star misshape, and one area where there is flaring to the top right of the Pacman nebula. I’ll be able to fix these once stretched.

This is just a simple histo stretch and a small contrast tweak for the screen.

TomLum 25 pane APP…[Read more]

Hi Mabula,

Previously it took me about 2 -3 weeks to create the base layer, align all files to this base layer, process them to non linear data then stitch and blend in PS.

Now if I can get the settings right, technically only 3 hours Laptop time. This would be fantastic, and would also leave me with linear data. However with experimentation,…[Read more]

That did help in some areas, and made it worse in others. If I blend the two versions together, there is only one area where there is an issue. So Its getting very close to an entire flat, gradient correct, brightness single linear layer, cool.

I can give you some frames about the area where both struggled to blend, but as this is my next big…[Read more]

My method for my two Mega Mosaics, Orion and the Galactic Centre were to make a base layer in PI with their Star Alignment, process. The GMM process which can make a mosaic from the Star Alignment base layer did not work for me. It left halos on stars, dark holes, distortions etc.

So I let the SA process register and build the base layer. Then I…[Read more]

Mabula,

Yes I like to get straight in there and test the big mosaics 🙂

I don’t quite understand the Thin Plate Spline bit. That sounds like a method to calculate the registration for the panels.

So let me mention where the frames came from

1) FITs were calibrated in AstroArt 5 with Darks and Flats applied here to stack the master 4 hr…[Read more]

Here is the 25 pane version, used with the DBE files. Very good blending result for brightness, gradients and detail.

Two areas of overlapping show star distortion.  Whether these can be joined without issues by other settings I m noy sure yet. More testing to do.

This took 3 hrs on the laptop to put t…[Read more]

Let me try that initial image again16-pane-Lum-DBE-test-2k

Zoomed in version.

I stretched the final image to show the Non linear version.16-pane-Lum-zoom-registration