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BlockHead
About
- Username
- BlockHead
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Comments
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My first observation is that your 5 second MasterDark has LIGHT in it. This is bad. :)The 30 sec dark looks OK. However... it appears there is probably a more fundamental processing error going on. In FastTrack I suggested you look at all of the dat…
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Sounds like corrupt files.You can make one of the files that couldn't be debayered available by a cloud drive (Google Drive, OneDrive..etc). Be certain to make the link public... so that anyone with the link can download the image. -the Blockhead
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Hi Bruce, I am new to this area of Narrowband imagery and rendering images. I have published some examples of my methodology in Horizons with data you can download and follow along with. I have not used the scripts- I am unaware of a big benefit. Pe…
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Hi Craig, I keep all raw data- and usually rework from the raws. If I have processed one data set that I know to be good - I would not mind reusing the generated master files to save some time on processing another data set taking at nearly the same…
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I plan on addressing this as soon as I can with as much tact as possible.It is a complicated subject and there are some extenuating circumstances.The reason you have not seen the answer... is that it is hard to explain.If you TRULY explain everythin…
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Hi James, I see where you are coming from... I do not know is the short answer. I wonder if the combination count is used for the estimate for the additive noise (the readnoise)- which would be independent of weighting of the signal. But I think yo…
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Good work figuring it out. -the Blockhead
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Good question.You need to purchase John's module so that you can incorporate the normalization files.But... lets let @JohnMurphy answer this himself! I will creating a new update for NSG shortly. -the Blockhead
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The headaches get better once you have pulled out all of your hair.
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Yes. Cameras are not light tight in general... nor is the sensor end of most telescopes where adapters are and so on. I always recommend taking all calibration data at night away from any sources of lights. Score Card for nighttime darks in my expe…
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One of the things I teach in FastTrack training is to blink ALL data (even calibration data)... just look at it- it only takes a second- and make certain it makes sense before processing. This bit of time spent is likely better than the extra time …
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Yes..definitely.I think you got light leaked... -the Blockhead
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But do the RAW Red and Green frames show the problem?
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Just to be clear- DBE isn't doing anything to make things worse...it is just allowing you to see the issue more easily by making the background more uniform. Typically this more uniform background comes with a greater stretch... with more contrast s…
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Something else is wrong.This looks like an obstruction... kind of. Please verify filters are centering properly... an no other issues.Also, check your dark frames to make certain no light leaks. (Do the RAW Red and Green images look like this??).-th…
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Hi James, I think the biggest issue is that the CMOS sensors tend to be only 12-bit or 14-bit sensors. This really limits options to control saturation of bright stars. These sensors have the combination of being both sensitive and "shallow" in term…
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excellent
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Wow..that could certainly do it...BUT, you would see this pattern in all of your results no matter than method you used to combine the data...it would persist.But you may be on to something.
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Also, could you please post the result with NSG that I assume looks cleaner? -the Blockhead
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Not exactly... you are just using additive+scaling (I think) when you disable LN in WBPP. You are still normalizing the data.. it just isn't local..it is the local part that I think could be the issue. I think this strongly points to LN. Have you p…