Slow Mosaic integra...
 
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May 27 2026 APP 2.0.0-beta45 has been released !

Fully Multi-Threaded LNC, many improvements for the registration engine, platform upgrade, and further tuning of internal memory consumption and memory release back to OS.

Apr 14 2026: Google Pay, Apple Pay & WeChat Pay added as payment options

Update on the 2.0.0 release & the full manual

We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.

Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.

 

Slow Mosaic integration 20+hrs

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(@netboy)
Molecular Cloud
Joined: 9 years ago
Posts: 2
Topic starter  

I used Sara's tutorials to try to build a mosaic.  It consisted of 4 panels with 30 frames each.  It has been processing for about 20 hrs now and is still going.  It is doing something because the console changes so I know its not frozen.  Is this normal?  I am almost positive I copied the settings that Sara used.  The cpu was maxed out for the longest time but now its at around 20% and still going.

My CPU is an i7 4770k and I have APP to use 12gb of RAM.  The hard drive is some old 1tb drive, I am sure its slow. Can this be the problem.  



   
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(@netboy)
Molecular Cloud
Joined: 9 years ago
Posts: 2
Topic starter  

Nevermind I think i found my answer in another post.  Create each panel separately then do the mosaic.



   
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(@mabula-admin)
Universe Admin
Joined: 9 years ago
Posts: 5318
 

Hi Netboy,

Yes, it's most efficient to first create the panels and then create the mosaic from the panels. The reason being: If you load all single frames (4*30=120) then the mosaic algorithm needs to find the registration parameters( for both the projective transformation and the and optical distortion correction) for all 120 frames all at once. This is a huge calculation and therefore will take very long. The calculation in the end finds 120 *16 parameters = 1920 ! parameters. If you create the 4 panels and then register them as a mosaic, the algorithm only needs to calculate 4x16 = 48 parameters and this should be finished in a couple of minutes on your i7 I think.

On a sidenote, in the next APP version 1.054 (which I try to release before mondag) a strongly improved mosaic algorithm is introduced which might very well give a better registration for the whole mosaic, it will be more robust and quicker. Details here:

https://www.astropixelprocessor.com/community/release-information/astro-pixel-processor-1-054-preparing-next-release/

Kind regards,

Mabula



   
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