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Messages - rtemen

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I started going through the tutorial again from the beginning.  I was trying to watch the results of each step.
Here is what I have found.
In Kayron's tutorial, in Section 5 Boosting colour and fine detail contrast in the target, I have noticed the big difference.
In the section:

Let us now boost the colour in the galaxies just like we neutralised the colour in the background earlier, using the MultiscaleLinearTransform process. Click the Reset button, select 8 under Layers and select Chrominance (restore CIE Y) under Target. We again address the large wavelet Layers 5 to 8. This time however, the Bias values we enter are positive and nowhere near as aggressive. I will enter 0.150 for Layers 5 and 6 and 0.200 for Layers 7 and 8?.

When I apply the MultiscaleLinearTransform, the blue rings around the start really jump out!

Here is a screenshot.

Any suggestions will be appreciated.


While proceeding with the tutorial, I am at this point, where he indicates the first pass at noise reduction.
Here is a shot of my image at this point.
There is some rather obvious blue ringing around many of the stars.
This tool does have a De-Ringing section.  I have tried to enable it and tweak the numbers a bit, but I obviously do not know what to do.
Is it already too late to try to use this Deringing tool in the MultiscaleLinearTransform process?

Thanks for any guidance.


I was wondering if there is a guru out there who would like to process my files and log the steps to help me learn how to better process files myself.
I have been following several tutorials, but of course, none of them can tell about my files exactly.
The latest tutorial is from Kayron Mercieca on Light Vortex.
This made a big difference in my results, but there is still an issue with ringing on some of my stars.
Upon doing some more research, it is suggested that I use the DeConvolution process to help with this problem.
So, now I don't know what to do.
When should I have used the DeConvolution, and how do I tell that it is doing something positive?
I have saved my project, and I assume that I should be able to backtrack in my history and inject the DeConvolution Process???
Or do I just need to start over.

Kind of a long message, but thank anyone who might be willing to help.


Hi, Rob.
Thanks for the reply.
I am fairly new to PixInsight, so I do not know what a lot of the tools are, or what their names even mean.
So at this point, are you able to tell me anything about deconvolution as to about where in the process it should be used?
Like, does it need to be on a linear or non-linear picture?
Any hints on what general steps it should be used between?

If you know of a good tutorial on deconvolution that you could point me to, that might help as well.


I followed the tutorials on Light Vortex by Kayron Mercieca where he processes Andromeda.
When I finished, there is some significant ringing, especially around some of the start in front of the galaxy.
Could someone guide me as to where in the process I should have done some steps that would have removed the ringing?
I saved my project, so I should be able to backup to the proper step and work on the ringing.



In the tutorial at Light Vortex by Kayron Mercieca, describing pre-processing, I have a question.
At the end of Step 4, it indicates that if I have One Shot Color camera it is time to DeBayer the lights.
So I did DeBayer my shots.

In Step 5 it indicates that the input files should be the Calibrated and Cosmetically-Corrected files.
In my case, should I use the DeBayered files, or is there a reason to use the ones just before DeBayering?


I am also having some troubles while following your tutorial.
I put a post up the other day showing what I am getting.
Here is the post:
PixInsight Forum » PixInsight » Image Processing Challenges » Applying HDRMultiscaleTransform to my image Clone is producing strange results

Can you tell from my description and pictures what I might be doing wrong?


No, I didn't let anything change them to tiff's. 

However, I do want to thank you for the link to that tutorial.
It was a longer process then I have gone through before, but, FINALLY, I see a great improvement in my results now.
This tutorial was more detailed and had more steps to go thru, but it helped a lot.

Thanks, again.

Hi, Rob.
I truly do not recall who told me this before.  There were so many people helping, I don't know who told me what at this point.
I have not been working on my astronomy for several months now due to the high heat here in Phoenix.  So, I am starting anew.
That being said, I am not implying what you told me is wrong, just that I might need a more detailed tutorial.
For example, if I lets say, follow the steps to make my master dark using the steps showing Raw and CFA, is there any way to check the result to see if it worked properly.
So, I will go to the link you suggested and see what I can learn or do in more detail to be sure I have it right.


Greetings.  (this is kind of long  :) )
I have been working with Pixinsight for a goodly while now, and I am 'stuck' on a couple of issues.
For about a half a year now, I have been following the image processing video by Richard Bloch.
After some practicing, I have been getting better at processing.
However, I seemed to be at a point where I couldn't get things any better.
After several discussions on this forum, one member told me that when using a camera like my T3i, I needed to process all of my flats, darks,bias, etc, using the Raw and CFA settings in the Format Hints, and only when I get to the point that the Lights have been calibrated, do I use the DeBayer tool to convert the pics to color.
After following the examples that he pointed me to, my results are much worse than my Richard Bloch results.

So, here are the big questions:
Is it true that all of my processing should be done in the RAW CFA formats?
If so, is there a tutorial that will walk me through a thorough workflow on processing my files in this mode?


Thank you.
I will use the process.


I am using my Canon T3i for my lights.
I am at the point in my workflow where I need to Debayering my files, but I do not know the difference between the Debayer Process and the Batch CMYG Debayer Script or which is the appropriate on to use at this point.

Thanks for any guidance.


Hi, Gerald.
Well, I did not have time to set up the files as you requested in your previous threads.
However, I did take some more pictures last night of M57.
Here is the link to all of the files.
The Bias and Dark I rebuilt using your instructions.  Let me know if they are OK.  If Not, I can send all the raw files for the bias and darks as well. But I think they are OK.

Thanks for looking at these.

Hi, Guys.
Well, I followed all of your advice (both of you) and I did seem to get better results.
Now, I processed the image with some basic procedures and resulted in this.
Next might be a better processing workflow to really fine tune things.


Hi, Gerald and Rob.
I had 10 to 15 lights of M63, but the others failed on tracking and so I deleted the bad ones and kept these 5.
So, I decided to start fresh on a different set of files and apply all of the help given me in this thread.

I will post my results if I succeed in making things better.


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