FD 03-30

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FD 03-30

Post by MAURITS »

A quick recoding from this morning before the clouds, there was a lot of hase in the air ...

Asi 120MM-S

Lunt DS 60/35

I believe there is something wrong, I have all horizontale small lines in both images, not to see in the AVI recording. :roll:
11_16_23 Grey.jpg
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11_16_23 Color.jpg
11_16_23 Color.jpg (193.33 KiB) Viewed 4469 times
Last edited by MAURITS on Mon Mar 30, 2020 2:28 pm, edited 2 times in total.


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Re: FD 03-30

Post by marktownley »

Nice sun, looks like fixed pattern noise to me.


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Re: FD 03-30

Post by PDB »

I would say its fixed pattern noise too. But that is strange, never seen that on an AS120.
To much undersampled? What f/ratio did you use Maurits.

Paul


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Re: FD 03-30

Post by salvo lauricella »

Nice shots! Even for me it is fixed patter noise.


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Re: FD 03-30

Post by MAURITS »

The problem is fixed,
It was in AutoStakkert 3, the "frame procentage to stack" was not oke, I had places in the four columns each 10%.
Now I only placed in the first colon 10% and the result is free of horizontal lines.
test 1 Grey.jpg
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test 2 color.jpg
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Re: FD 03-30

Post by JochenM »

Good that you managed to solve it. Very nice looking disk!


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Re: FD 03-30

Post by MAURITS »

I don't understand why there are four "frame procentage to stack" in AS3.
Last edited by MAURITS on Mon Mar 30, 2020 2:09 pm, edited 1 time in total.


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Re: FD 03-30

Post by JochenM »

MAURITS wrote: Mon Mar 30, 2020 1:03 pm I don't understand why there are four "frame procentage to stack" in AS3.
They represent 25% sections of the video. If you look at the graph in the middle of the screen, it'll give you an overview of the quality of each section. The idea is that you pick the section with the best quality and use frames (however many you see fit) from that section by entering a number in the appropriate input box.


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Re: FD 03-30

Post by MAURITS »

JochenM wrote: Mon Mar 30, 2020 1:07 pm
MAURITS wrote: Mon Mar 30, 2020 1:03 pm I don't understand why there are four "frame procentage to stack" in AS3.
They represent 25% sections of the video. If you look at the graph in the middle of the screen, it'll give you an overview of the quality of each section. The idea is that you pick the section with the best quality and use frames (however many you see fit) from that section by entering a number in the appropriate input box.
Jochen, what do you think is the best of the four coloms?
SUN.png
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Re: FD 03-30

Post by JochenM »

Personally, I'd use the second. The overall quality of frames looks highest there.

I think you can safely use a higher percentage as well. You have a total of 1008 frames, so 252 per section to play with.


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Re: FD 03-30

Post by MAURITS »

This image is again WITHOUT a flat processed.

There are no visible traces of horizontal lines.

When I don't use a flat calibration in Sharpcap 3.2 Pro than I have not the horizontal lines.

test 4 Color.jpg
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Last edited by MAURITS on Mon Mar 30, 2020 2:10 pm, edited 1 time in total.


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Re: FD 03-30

Post by MAURITS »

JochenM wrote: Mon Mar 30, 2020 2:01 pm Personally, I'd use the second. The overall quality of frames looks highest there.

I think you can safely use a higher percentage as well. You have a total of 1008 frames, so 252 per section to play with.
Thanks Jochen, but what is the function of the green curve from upper left to botom right??


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Re: FD 03-30

Post by PDB »

The green line represents the sorted to quality.

Jochen are you sure about the "sections". Doesn't AS stack accourding the the sorted quality? (Thats the only way thats make sense)

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Re: FD 03-30

Post by JochenM »

Hi Paul

You're making me doubt now :)

The way I always understood it (maybe I'm completely wrong, anyone feel free to correct me) is that the "sections" are basically representations of 25% of the total frames by sorted quality (left to right).


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Re: FD 03-30

Post by PDB »

My understanding was the 4 stack options were to generate 4 stacks "at the same time" from the same set (left to right on the graph)
The diagram is normally shaded, which is the sorted option. You can change that by pressing the frames button on the image window, then you scroll not by quality, but by time. (But don't know if that influences stacking)

Not much documentation around for AS!3. Maybe whe should as Emiel

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Re: FD 03-30

Post by marktownley »

PDB wrote: Mon Mar 30, 2020 2:40 pm My understanding was the 4 stack options were to generate 4 stacks "at the same time" from the same set (left to right on the graph)
Yup, that's what it does.


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Re: FD 03-30

Post by JochenM »

You learn something new every day. Thanks for that!


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Re: FD 03-30

Post by MAURITS »

After we know, is the second part now the best of the four parts in the above diagram, and why, because most lines are above the blue horizontal 50% line?
Last edited by MAURITS on Mon Mar 30, 2020 4:22 pm, edited 2 times in total.


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Re: FD 03-30

Post by marktownley »

AS3 sorts the best frames to stack automatically.


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Re: FD 03-30

Post by rsfoto »

Hi,

Nice disks

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Re: FD 03-30

Post by Montana »

I'm glad you got this sorted, the full discs are beautiful :hamster: :bow

I always thought the 4 sections were a time saving device, you align the once, then can stack the best 1%, 2%, 5%, 10% etc or whatever you fancy and see which is the best.

Alexandra


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Re: FD 03-30

Post by marktownley »

Montana wrote: Tue Mar 31, 2020 9:13 am I always thought the 4 sections were a time saving device, you align the once, then can stack the best 1%, 2%, 5%, 10% etc or whatever you fancy and see which is the best.
That's exactly what it is.


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