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BlockHead

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BlockHead
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  • Sorry... before I look .. you did not provide the DARKS . This is the critical piece of evidence.You need to demonstrate you are calibrating the flat correctly and that what you are calibrating with (the dark) is valid. -the Blockhead
  • Agreed.The VISUALIZATION of a mask is not the same as application of the mask itself. I never use/rely on the visualization of the mask. It is supposed to be a guide of some sort to help you know the coverage- but it does not apply the actual logic …
  • Let me add- I also have a link to the very important fundamental STF and Histogram information here:https://www.youtube.com/playlist?list=PLAzMa9eIVQkAj9urQ7SJJmlCPgPnNokP_ There are three videos... but the Utilization above I think does a good job …
    in STF Comment by BlockHead April 21
  • Hi Kenneth, You say Chapter "11"... but I don't do anything at 9:20 in the videos for Step 11. Can you please copy and paste the URL to the page that the video is on? BUT... I do *anticipate* questions like this. You see, in FastTrack Training peopl…
    in STF Comment by BlockHead April 21
  • Would you agree that this field has less stars than the other fields?  So now I will reiterate what I teach in various lessons. What is the subject here - the stars or the galaxy. I would argue the galaxy is the primary subject.Next, do the stars in…
  • And anything else?
  • That is not the direction I am thinking about. I think this is more about what is important in the image. Keep in mind the LRGB lesson, as many lessons do, do not have every consideration taken into account. The lessons become too long and viewers l…
  • Can you suggest some reasons why I might not remove the stars and process them separately based on the this video and others on my site? It might be instructive to format this exchange in this way based on my videos and overall philosophy I take abo…
  • Can you please show me the video where I state it is in the Fits Header? This changed (it is no longer true) and it appears you are watching an older video. I need to make certain my website is correct.  Regarding SPCC, I do not believe you got the …
    in SPCC Comment by BlockHead April 16
  • Yes... as long as there is MGC coverage there. -the Blockhead
  • Yes, that is what was needed.The answer is there.You need to zoom into your data... like 300% (3:1).You will see that every star in your image is an out-of-focus star-donut. As part of diagnosing a problem you should look at your images closely incl…
  • AI process?Anyway, you need to save the image you have in you project to your computer as an XISF file (the default) and then upload that file. -the BLockhead
  • Eric, Mike's suggestion is excellent.I might suggest some creativity. What you seeing here is a result of the fact you are undersampled. You might try to temporarily upsample the image (perhaps with bicubic), do the extraction, and then downsample b…
  • If this is a color images, remember you need to look at the individual channels of RGB to see the changes. The Blockhead
  • Thank you for creating the screenshot. That is very helpful to understand the issue.You are demonstrating something that in practice does not make sense. If CC with 3 doesn't remove the hot pixels and 5 does..that is somewhat non-sensical.  So...I a…
  • Sorry... this is just the screenshot of some metadata. Can you send me the actual file?-the BLockhead
  • Yes, these are screenshots. Can you make the actual M101 XISF file available to me? It appears to me this is probably an image quality issue.But...I will understand once you get the file to me...just make another link with the actual file. -the Bloc…
  • I do not think you can upload to this forum at the moment. You can e-mail me directly with thefiles...  you can also (please) make the actual image available for download by putting on a cloud drive somewhere (google drive etc). Remember to make the…