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Issues with stacked images in post processing...

DSLR Imaging Visual Astrophotography
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#1 burning.skies87

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Posted 30 March 2023 - 02:36 AM

So after spending a few hours out taking photos tonight I came in, excited to stack my 60 sec frames up and load the resulting file in photoshop to see what I could hopefully pull out.

The resulting image is what I've gotten and I'm unsure of what the culprit is. It's on my 60 second frames, as well as my 30. Last night I didn't have any issues with a previous picture. Hoping I could get some feedback on what I might be doing wrong, either in the software side of it, or just simply not taking darks or flats the correct way or what have you. 

60, 60 sec light frames

20, 60 sec dark frames

50 flat frames
and a number of bias frames.

It's been kind of something I've been banging my head against, as I'm unsure what's causing the various little issues with things like this, and I'm not entirely sure how to correct it. Any help would be a huge boon. Thank yo ufor taking the time to look at this. 

Attached Thumbnails

  • 2023-03-30.jpg

Edited by burning.skies87, 30 March 2023 - 03:01 AM.


#2 Robert7980

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Posted 30 March 2023 - 02:54 AM

Welcome to CN… Posting pictures here takes a little research, hopefully you’ll get it posted so we can see what’s going on… 


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#3 burning.skies87

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Posted 30 March 2023 - 03:02 AM

Welcome to CN… Posting pictures here takes a little research, hopefully you’ll get it posted so we can see what’s going on… 

 Thanks for the nudge. Attached it initially but absolutely forgot to press add to post. lol.gif



#4 imtl

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Posted 30 March 2023 - 03:11 AM

What were you trying to image?

#5 burning.skies87

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Posted 30 March 2023 - 03:45 AM

What were you trying to image?

I believe that image in particular was off and around the cone nebula/ngc2238. 



#6 imtl

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Posted 30 March 2023 - 03:47 AM

I believe that image in particular was off and around the cone nebula/ngc2238.


Yes. It looks like your plate solve was off and you imaged the wrong region

#7 burning.skies87

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Posted 30 March 2023 - 03:54 AM

Yes. It looks like your plate solve was off and you imaged the wrong region

Oh absolutely. I'm more or less just trying to understand what has caused the distortion of the image, at this point. I'm okay with not having the camera pointed in the right direction, I'm just not sure how to fix the post processing side of it with something like this, I suppose. Or where to start rather, if that makes sense. 



#8 imtl

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Posted 30 March 2023 - 04:17 AM

Oh absolutely. I'm more or less just trying to understand what has caused the distortion of the image, at this point. I'm okay with not having the camera pointed in the right direction, I'm just not sure how to fix the post processing side of it with something like this, I suppose. Or where to start rather, if that makes sense. 

What distortions in your image are you referring to?



#9 Jim Davis

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Posted 30 March 2023 - 06:08 AM

What distortions in your image are you referring to?

I believe he is referring to these areas

 

post-451650-0-13138900-1680163306.jpg


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#10 imtl

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Posted 30 March 2023 - 06:10 AM

These could be coming from light pollution gradients or improper calibration etc. We need more info and too look at a raw sub

#11 marvyyk

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Posted 30 March 2023 - 06:18 AM

I would go for light pollution as well, and/or light leaks ...



#12 burning.skies87

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Posted 30 March 2023 - 11:06 AM

These could be coming from light pollution gradients or improper calibration etc. We need more info and too look at a raw sub

 Just one of the random 60 that was taken. Not even concerned with it being on target of anything specific, I'm just not sure what causes the issue shown above when stacked. I'm under class 2/3 skies, so I wouldn't think light pollution would be a thing, unless it's just something I never thought to consider like moon glare or what have you.

https://www.dropbox....G_0055.CR2?dl=0


Edited by burning.skies87, 30 March 2023 - 11:06 AM.


#13 tdengler

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Posted 30 March 2023 - 08:05 PM

What does your master flat look like?



#14 starhunter50

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Posted 02 May 2023 - 03:18 PM

Well that was ez to remove.. what was the problem again? looks like vignetting.

 

 

Attached Thumbnails

  • IMG_0055_background.jpg
  • yepez.jpg
  • vignette1.jpg

Edited by starhunter50, 02 May 2023 - 03:20 PM.


#15 Oort Cloud

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Posted 02 May 2023 - 03:45 PM

Looks like thin clouds to me on the image of a single 60s sub posted above.


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