Mosaic problem - di...
 
Share:
Notifications
Clear all

June 24 2026 APP 2.0.0-beta46 has been released !

Improved internal memory configuration (lower ! memory usage), fixed beta45 startup issue, fixed Set Save Directory & 2-panel mosaics.

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.

 

Mosaic problem - distorted stars in one corner

9 Posts
2 Users
0 Reactions
2,141 Views
(@einari)
Main Sequence Star
Joined: 9 years ago
Posts: 20
Topic starter  

Hello,

Just got APP and have now tried to do 2x2 mosaic of Sadr area.
I have now got better results than first tries but still have one corner which have bad stars.

Have made the following changes:
3) Analyze
-> 5000
4) Register
- pattern - quadrilaterals
- use dynamic distortion correction
6) integrate
- LNC - 1st degree - 3 LNC iterations
- enable MBB - 10%
Outlier rejection
filter - MAD sigma clip - kappa 3 - 1 iterations

Registration mode is normal.

 

Some other questions:

1. Can you load all channels (say LRGB or HaOIIIS2) and register them and make mosaic all of them in one go ?
2. Can you save the settings ?

sadr 2x2 app problem LR

 


This topic was modified 7 years ago by einari

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

Registration mode should be set to advanced, does that make a difference?

1. Not completely,  usually people tend to run into memory issues, besides that you would need to separately tweak the narrow-band images before combining them with RGB and then assign the narrow band data to R,G or B.
2. Not yet, Mabula is working on precisely that.



   
ReplyQuote
(@einari)
Main Sequence Star
Joined: 9 years ago
Posts: 20
Topic starter  

After numerous experiments I think I found a way to produce a whole mosaic.

I think this made a difference:
6) integrate
weights - star shape
integrate - median

Now I still have
4) Register
- pattern - triangles
Could try with the 'normal' setting



   
ReplyQuote
(@einari)
Main Sequence Star
Joined: 9 years ago
Posts: 20
Topic starter  

Still not happy with one corner and would be happy if someone could help me fix this.
Frankly, I made some previous mosaic attempts with more crude methods (even using Microsoft ICE) and got better stars.

sadr 2x2 2019 09 12 96x5m Ha 95x5m OIII mosaic stretch Ha crop

 

Have checked original files and they look ok to me.



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

Have you used the advanced option already when making the mosaic?



   
ReplyQuote
(@einari)
Main Sequence Star
Joined: 9 years ago
Posts: 20
Topic starter  

Yes, I tried that.



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

Mmm, if you want you can upload some of the frames to our server so I can have a better look?

APP server,with login/password: appuser

Please create a folder with your name on it first, thank you.



   
ReplyQuote
(@einari)
Main Sequence Star
Joined: 9 years ago
Posts: 20
Topic starter  

I already uploaded one nights frames to my Google drive:
https://drive.google.com/drive/folders/1FU5c2CL559SJ6gtmXfLdrxSJaCyMDI0X?usp=sharing

One person tried them and was able to produce perfect mosaic but only if he first stacked individual panels first and then made a mosaic of them.

If that works then why not in one go ?



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

I have no idea. 🙂 I will download a few and have a look.



   
ReplyQuote
Share: