21May - C11 HA/CAK Close-ups - Images added 23 May 20

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Re: 21May - C11 HA/CAK Close-ups

Post by Carbon60 » Fri May 22, 2020 5:42 pm

This is certainly great information. Thanks for the discussion, guys.

Stu.


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Re: 21May - C11 HA/CAK Close-ups

Post by yltansg » Sat May 23, 2020 11:03 am

Filip (GreatAttractor) processed another raw file, different from the image posted previously but taken on the same day 21 May (from stacking 500 frames) with ImPPG to produce this image (500frames - 70%, Q117)):
At 100% Q was 123

Image

Subsequently, using the same ImPPG processing settings to process a 1000 frame, 1500 frame and 2500 frame image:

1000-frame stacking (63%, Q115)
Image

1500-frame stacking (58%, Q114)
Image

and finally 2500-frame stacking (52%, Q113)
Image

All these images look about the same to me. There is no improvements in terms of details and also no significant blurring because of more frame stacking. Please give me your views. Next I will explore doing more stretching in ImPPG on the images with more frames to see if I can get more details out of them.

With Filip's permission I have attached his XML file for those who are keen to know.

Alfred
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cak_proc.xml
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Last edited by yltansg on Sat May 23, 2020 2:05 pm, edited 2 times in total.



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Re: 21May - C11 HA/CAK Close-ups - Images added 23 May 20

Post by krakatoa1883 » Sat May 23, 2020 11:46 am

Alfred, can you share the raw ?


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Re: 21May - C11 HA/CAK Close-ups - Images added 23 May 20

Post by yltansg » Sat May 23, 2020 11:52 am

Hi Raf,

Here they are:
092201 1000c1exp057.png
092201 1000c1exp057.png (2.89 MiB) Viewed 111 times
092201 1500c1exp057.png
092201 1500c1exp057.png (2.86 MiB) Viewed 111 times



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Re: 21May - C11 HA/CAK Close-ups - Images added 23 May 20

Post by yltansg » Sat May 23, 2020 11:55 am

Here is the raw for the 500 frame-stack
092201 500c1exp057.png
092201 500c1exp057.png (2.97 MiB) Viewed 110 times



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Re: 21May - C11 HA/CAK Close-ups - Images added 23 May 20

Post by solarGain » Sat May 23, 2020 3:22 pm

Alfred, there is a lot going on here.
John



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Re: 21May - C11 HA/CAK Close-ups - Images added 23 May 20

Post by dhkaiser » Sat May 23, 2020 5:34 pm

h-alpha shot with good resolution!


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Re: 21May - C11 HA/CAK Close-ups - Images added 23 May 20

Post by krakatoa1883 » Sat May 23, 2020 6:05 pm

Unfortunately I could not do anything better with your raws than GreatAttractor already did. However at that image scale I think you need a really excellent seeing to obtain good images. Why don't use a stronger reducer ?


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Re: 21May - C11 HA/CAK Close-ups - Images added 23 May 20

Post by yltansg » Sun May 24, 2020 2:16 pm

Thanks John and Dan for your kind words.

Krakatoa, Thanks for trying. For now, I don't think the solution is better image post processing.

I will be trying different configurations (with different CAK filters) to see what is the best I can get out of the C11 + ARIES D-ERF. Will post my findings.

Alfred



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