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John Murphy
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Hi David,This is covered here: https://www.backyardastro.org/topic/3977-normalizescalegradient-script/page/12/ in my post on December 19th, 2023Regards, John Murphy
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Hi Rex,(1) PhotometricMosaic should preserve the header information when it creates a mosaic. However, I think you will find that the MosaicByCoordinate script does not populate the registered files that it creates with the astrometric solution. (2)…
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I have finally finished building my new website, which hosts PixInsight repositories for both NormalizeScaleGradient and PhotometricMosaic: https://www.astroprocessing.com I have tried to add as much useful detail as possible, so you might even fin…
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I have now created a new PixInsight repository for both PhotometricMosaic and NSG.See post: New repository for PhotometricMosaic and NSG Regards, John Murphy
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You can download the PhotometricMosaic v4.0.1 scripts and documentation from my website: https://www.normalizescalegradient.net/ Regards, John Murphy
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Hi Roger,Make sure you are using the latest version of PhotometricMosaic - version 4.0It can be downloaded from my website: https://www.normalizescalegradient.net/ Regards, John Murphy
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Yes, you need to add the .xnml data files that NSG produced into DrizzleIntegration. Regards, John Murphyhttps://www.normalizescalegradient.net/https://www.youtube.com/@NormalizeScaleGradient
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Yes, I have been working very long hours during the whole of January to try to find a solution to this problem. It only appears to happen on top end machines (which I can't afford!) which has been an extra challenge. The error is usually reported as…
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Hi Michael,I have just loaded the two images and had a look at them.I personally think that the NSG image is the better image. I think that you have applied an unlinked auto STF to both images. The NSG image has a flatter background, and the nebula …
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Hi Michael, You also need to provide a link to the NSG reference image. Since all target images are normalized to this image, it is vital to know what the reference image looked like in order to be able to judge if the normalization worked correctly…
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Hi Michael,When used correctly, NSG should never produce a poorer quality image. It does not directly change the color balance or the color saturation, but since we are normalizing the target images to a reference image, the final result will be clo…
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Adam Block did a great job of answering this question here:https://www.adamblockstudios.com/forums/discussion/comment/2005/#Comment_2005
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That's great to hear. Thanks!NSG author, John Murphy.
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Hi Alan,To make NSG compatible with DrizzleIntegration, NSG needed to produce '.xnml' normalization data files. Unfortunately this was not possible from JavaScript. I have therefore created a C++ module, 'NSGXnml' which the NSG 2.1.4 script calls in…
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With the current version of NSG, you would need to:Use NSG to normalize the data. Set the Gradient smoothness to maximum smoothness (4.0). The results will be corrected for the average image brightness scale, and the best fit linear gradient.Use the…
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It is in the menu:SCRIPT -> Batch Processing -> NormalizeScaleGradient You can also download the latest version from the PixInsight forum:https://pixinsight.com/forum/index.php?threads/normalizescalegradient-1-6-extra-table-columns.16507/post-…
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Hi Bernard I have just uploaded NormalizeScaleGradient 1.6 to the PixInsight forum:https://pixinsight.com/forum/index.php?threads/normalizescalegradient-1-6-extra-table-columns.16507/post-108688 Now that version 1.6 is finished, I am currently work…
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I think it is possible that this data was not calibrated by PixInsight. Was the image from TelescopeLive? Are these images calibrated by TelescopeLive?The first evidence of processing that I see in the FITS header is CosmeticCorrection (PixInsight 1…
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Hi Reggie The source .xisf file was in Integer 16 format.NSG reads in the image and then has to convert its internal copy of the image to floating point. There was a bug in this conversion - I had forgotten to copy over the FITS headers.This bug was…
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I have sent a message that contains my email address.Regards, John