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Artifact on bright area and DLSR partially defiltred  

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(@mcegli)
Hydrogen Atom Customer
Joined: 6 months ago
Posts: 2
July 19, 2020 14:17  

Hello. I am completely new in APP. Already done some good picture with it.

I do a night session for Neowise comet, with 27 lights and 30 DOF (of each), with an partially defiltred DLSR. When i get the processed image, the head of Neowise is much more exposed (overexposed) and an artifact (like a grey zone) is present on both side of the head. (The lights doesn't present this artifact).

What is the problem ? Defiltred DLSR, too much lights (i try with different numbers of light, and that change the artifact). Is it possible to reduce the total exposure of the brightest area ?

Thanks for your help

The images : 1 light (i don't understand why it is green, because the raw file is red due to partially defiltred DLSR) and the second picture is the processed image in APP (with the artifact)

Capture d’écran 2020 07 19 à 13.56.05
Capture d’écran 2020 07 19 à 14.13.55

 


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(@vincent-mod)
Universe Admin
Joined: 3 years ago
Posts: 2665
July 20, 2020 13:32  

This could be because of a combination of overexposure and the way the dslr was modded. But I’m guessing a bit here. If you want you can upload the files to our server to be included for comet registration testing in APP as we want to support that in a later version, tricky data like this will help us get the best overall result for it. You can find more about the upload process in the forum message by Mabula. If you uploaded it, let me know and I can already have a quick look.


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(@mcegli)
Hydrogen Atom Customer
Joined: 6 months ago
Posts: 2
July 20, 2020 18:27  

Hello Thanks for the answer. If you look the picture of one of de lights, i don't found it's overexposed (also not in the area where it is the artifact. Anyway, if i hear you, it's maybe not a dummies workflow !

Sur i can send you the data, but it's huge. Do you want also the DOF ? Light and DOF is 1.2 Go !

Let me know


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(@vincent-mod)
Universe Admin
Joined: 3 years ago
Posts: 2665
July 31, 2020 12:00  

Whoops, I totally missed your reply, very sorry about that. If you want you can upload the data to here;

Go to https://upload.astropixelprocessor.com and use upload1 (or upload2 till 5) as username and password will then be the same as the username.

Create a directory named “mcegli-cometoverexposed” and upload in there. Thank you!


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(@vincent-mod)
Universe Admin
Joined: 3 years ago
Posts: 2665
July 31, 2020 12:01  

And also test the new beta, it will now have comet stacking support.


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