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9 July 2020 - APP 1.082 has been released which contains one important bug fix. 1.082 has full Fujifilm RAF support, so that includes SuperCCD & X-Trans camera's 🙂 !

9 July 2020 - New and updated video tutorial using APP 1.081: Complete LRGB Tutorial of NGC292, The Small Magellanic Cloud by Christian Sasse (iTelescope.net) and Mabula Haverkamp

2019 September: Astro Pixel Processor and iTelescope.net celebrate a new Partnership!

Best quality not taken as reference  

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(@rbarbout)
Molecular Cloud Customer
Joined: 6 months ago
Posts: 5
May 1, 2020 17:30  

Hello,
I am stacking the results of three sessions for a total of 86 photos.
I asked APP to keep only 80 photos based on their quality.
APP shows that it has selected photo # 50 as a reference with a quality score of 317.03.
However, you can see that some other photos have higher quality (up to 322.82).
Is it normal that photo # 65 was not taken as reference ? 

APP Quality

In addition, would it be possible to have a function to export the values presented to a csv file.
And finally would it also be possible not to sort the data by session when displaying the analytical graph ?

Thank you,

Robert.

This topic was modified 2 months ago by Robert Barboutie

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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 1913
May 10, 2020 15:31  

Not sure actually, it may be that APP also takes a few other things into account. I'll tag Mabula to see if he has more input on this @mabula-admin


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(@mabula-admin)
Quasar Admin
Joined: 3 years ago
Posts: 2451
May 13, 2020 13:02  

Hi @rbarbout & @vincent-mod,

The reference frame is chosen after 3) Analyse Stars, so the quality score at that moment is used to determine the reference frame. If you load frames of different filters or even different camera's, APP will take that into account as well. So A luminance frame will be used instead of a Red frame for instance 😉

After 5) Normalize, you will see that the quality scores per frame will have changed, because APP will have more analytical data about your frames. Hence, the score will be different and a different frame might have a higher score than the earlier chosen reference frame. And this is normally not a problem/issue that will affect the integration outcome.

Always automatic sorting on sessions is rather usefull I think, but I will see if I can add an option to not do this.

Exporting the data will come as well 😉

Mabula


(@rbarbout)
Molecular Cloud Customer
Joined: 6 months ago
Posts: 5
May 14, 2020 16:28  

Hi @mabula-admin and @vincent-mod,

Thank you for the answer, it all make sense now.

Glad to see that you may take my requests into account.

For the global sorting, it was a way for me to know of many frames to stack and how many to reject.

Even if I know that APP makes a smart use of even the lesser quality frames  😉 

Robert.


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