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BlockHead
About
- Username
- BlockHead
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Comments
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Bart, I explain this in my sections on DBE in particular. When you operate on a color image, you are operating on three images (channels) at the same time. So as long as the samples are valid for each channel (typically so), you can do DBE on the co…
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It is a PixInsight issue. The graphics was not written to accommodate all of the various kinds of multiple displays as instantiated with various operating systems. Basically... PI doesn't like it. You can do it...as long as you understand the behavi…
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There is no problem with using the Normalize option. It will apply the correction around the calculated median of the image (the background). It is necessary to use this when adding starless and star-only images in their linear form. I explain and d…
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That is OK. When you install the GAIA catalogs... if you get a warning about "No Output Path Selected" ... do not worry! It is just because the box in the process is checked by default. You can uncheck it. What I show (by asking you to execute the p…
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Once the checkerboard is removed... the other effects are not about the pedestal issue. The faint mottling can be caused by poor dithering, lack of enough exposures and old dark frames. The mottling I see is diagonal... which strongly indicates dit…
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No, increasing exposure time will not help most likely unless you can get your sky counts to 1,000! But did the 1,000 help the issue? My guess is that you need to electronically increase the offset of your sensor first. You may have zeros in your d…
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Oh yes...I know that pattern. It means you are not using a pedestal for your NB data. You SHOULD actually be troubled by this... because you are losing data (in the form of zeros from over subtraction). Please see my famous video on this: https://ww…
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Indeed... just to followup. Your Ha frame is effectively a dark frame. Ignore the stars and nebula in there... the background sky is so dark ...there is effectively no light there. You should be able to take two dark frames and subtract them from e…
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Gain and Offset are electrical adjustments for your camera.Pedestals (in PixInsight) are mathematical constants added to values when doing image calibration. They are different. You can make 15 of each raw file available if you want me to look. Not…
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Yes, this is certainly the source of the rotation. I am amazed at the image quality considering this setup. If you have not reviewed my explanation of FastIntegration in FastTrack Training, it might be a good thing to do.-the Blockhead
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Offset 10? Hmmm... I was referring to the optimization question. Also... the darks and lights are the same age (e.g. the darks are not months old)?
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One more...
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The default is that the process console will only be visible when executing a process. By default the process console is at the top left edge of the screen. Click the tab to reveal it. Then click "square" symbol/control at the top right. If the proc…
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I guess I need to understand the setup- but I am guessing that be resetting the platform you are rotating the tube of your system? Only Alt/Az will produce rotating...but if you are equatorial..it means you literally rotated the tube? There isn't a …
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Is your Gain and pedestal setting on your camera (this is different than the WBPP setting) the same for the darks and lights? Did you use the same software to acquire the darks and lights? Are you darks for the flats the same exposure time? You are …
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Hi Malcom, Those "black flecks" are a red flag for a symptom I cover. Did you see this video in the WBPP series (and others)?: https://www.adamblockstudios.com/articles/step-up-your-narrowband-imagery-pedestal I am suggesting you likely need to hav…
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HI Mark, Does there have to be a difference? :)More generally, even if the technique is the same... each data set has its own features to deal with.PixInsight had a number of updates including WBPP and BXT.I also do a few things differently in this …
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Let me know how things are going... -the Blockhead
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Indeed, I was considering making a YouTube on this.However, it is only of interest to people that have the NVIDIA graphics.Probably still a large number of people... but... not certain if it makes sense to do. -the Blockhead
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Hi Linwood, Thanks for the suggestion. If I were Tony Hallas or Steve Cullen..this would be a natural thing to do... but alas this is not an area I think I would dive into- I agree with you it is a challenge. The only thing I would suggestion is tha…