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I'm having an issue where Narrowband Normalisation is giving me just a cyan image. See screenshot attached showing the image, the preview and the processing history. This is OSC data with a DNB filter (533MC Pro & L-enhance) in Pixinsight 1.9.2. Has anyone experienced this before?  |
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I experienced the same problem a couple a weeks ago, except the color was yellow. I do not know if it is the same issue but, I pushed the reset button down in the right hand corner. Worked fine since |
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From this screen shot It looks like your image is linear and is using ScreenTransferFunction. I'm pretty sure NarrowbandNormalization is meant for stretched non-linear images. I have not used it on linear photos so don't know if that would be the result, but that would be the first thing to try. Edit: I stand corrected (or at least a tiny bit more experienced). Just tested an unmodified linear image and it worked just fine. Never mind. |
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Try linking the channels in your STF. NB normalization only displays appropriately with linked channels.
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Yes, reset settings of this process, cross on the bottom right of the process window. If you have saved a process icon, you need to create a new one |
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Craig, I see in your workflow that you ran SPCC prior to Narrowband Normalization. SPCC will mess up the colors when using a NB filter. Bill Blanshan recommends that you run Background Neutralization and an Unlinked Stretch prior to NBN. NBN normalizes the OIII and SII data using Ha as a reference. If you run SPCC and use a linked stretch it prevents NBN from doing its job. It’s a common issue and I have seen several YT videos where they are demonstrating the wrong workflow for this process. Hope this helps. I have been a beta tester for Bill’s earlier scripts and have used NBN since it was released as a PI process. Dave |
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Agree. I experienced the same, but with a black screen. Resetting the tool helped in my case.
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I have to reset the tool every time I use it since the update. Otherwise it behaves the same as before.
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I had to make a new process icon with it reset and saved. Weird bug but not permanent
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Many thanks everyone, resetting the process solved the problem so that's great. Craig, Thanks for the tip, I'll go back and remove SPCC from the process. |
