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June 24 2026 APP 2.0.0-beta46 has been released !

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Update on the 2.0.0 release & the full manual

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Question on how to stack of multiple sessions gathered over years

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(@juergenn)
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Joined: 5 years ago
Posts: 88
Topic starter  

Hi all,

maybe it is a simple question and already answered, but I didn't found it in the forum.

I have gathered data for my M104 picture over two years now, yesterday I finished my 4th session since 2021. I created a stacked image for every session and created images were I loaded all of the lights, flats, darks and darkflats for all of the sessions so far.

My question: what is the best way to stack the sessions? Stacking the session stacks or begin after each session from the beginning and load all the subs?

 



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

In principle, when each of your stacks consist of at least 40 or more subs, those can be combined to give a nice result. Personally I may go for something like 100 frames per stack and then combine those for the final result.



   
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(@juergenn)
Neutron Star
Joined: 5 years ago
Posts: 88
Topic starter  

Hi Vincent,

thank you for your reply 🙂 Ok, so since I have less than 40 images per session I will stack the single lights.

regards

 

 

Jürgen



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

If in total you have like 300 subs, you may still want to go for 100 per stack, just to go easy on the system. 😉



   
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