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Mar 28 2026 APP 2.0.0-beta40 will be released in 7 days.

It did take a long time to have the work finished on this and it  will have a major performance boost of 30-50% over 2.0.0-beta39 from calibration to integration. We extensively optimized many critical parts of APP. All has been tested to guarantee correct optimizations. Drizzle and image resampling is much faster for instance, those modules have been completely rewritten. Much less memory usage. LNC 2.0 will be released which works much better and faster than LNC in it's current state. And more, all will be added to the release notes in the coming weeks...

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.

 

Strange star color calibration issu

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(@jan-willem)
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Joined: 9 years ago
Posts: 111
Topic starter  

@mabula-haverkamp-administrator

Hi Mabula,

I've been bussy with APP today, i made a stack of M8, M21 and M22. Then apply the remove light pollution tool, work great :)!!!

And after this i want to apply the star collor callibration, (a few months ago you dit help me with the settings for my type of cam. and the Idas LPS D1 filter), i used the same settings as i always use (normally it works great), but this time the star color don't seem to work correctly. Befor i use the calibration tool (see picture before) the stars are nice round and white (to white) but when i apply the tool the stars are also round but on the upperside right the are white and the down side lift the are blue, sort of half colored stars.

Am i doing something wrong?

 

Kind regards,

 

Jan-Willem Duijndam

Star color calibration issu start calibration
Star color calibration issu after calibration

 



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

It's a bit difficult to see, but it almost looks like the blue stars are blue because the colors aren't aligned very nicely, could that be if you look closely? I seem to see it in general with all stars.



   
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(@mabula-admin)
Universe Admin
Joined: 9 years ago
Posts: 5056
 

Hi Jan-Willem @jw_duijndamhetnet-nl & Vincent @vincent-mod

( I helped Jan-Willem by email to solve the issue, but I place the solution here for completeness 😉 )

The issue indeed, is mis-aligned of the stars, it looks like longitudinal chromatic aberration.

The solution is to:

  1. load the RGB data as a light frame
  2.  in 2) Calibrate, enable "Align Channels"
  3. save the calibrated frame.

The Align Channels feature will correct all forms of chromatic aberration using a special registration model 😉

Cheers,

Mabula



   
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(@jan-willem)
Neutron Star
Joined: 9 years ago
Posts: 111
Topic starter  

Hi Mabula and Vincent,

 

I did try align the channels and this resolve the mayority of te "shifting" for the rest i did set the blue-red slider a little less to the blue side (it was way to high to the blue side) an it seems a lot better.

Thanx to you both for the help, when te picture is finished i will share it on the forum :)!

 

Cheers Jan-Willem



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

Awesome! Always great when things get resolved fast. 🙂



   
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