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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.

 

Flat calibration warning

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(@jehoener)
Red Giant
Joined: 7 years ago
Posts: 28
Topic starter  

I have received the attached flat calibration warning.  The flats involved in the integration were provided by iTelescope's Calibration Library.  I am working on a 2-panel mosaic, each panel having been taken with the same optics and camera.  In the first panel processed no such warning appeared, but it appeared while processing the second panel.

What should I do to resolve this error message?

 

Thanks!

 

Joe

APP Flat calibration warning

 



   
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(@mabula-admin)
Universe Admin
Joined: 9 years ago
Posts: 5363
 

Hi Joe @jehoener,

It is not an error message but a very important warning, to tell you that you are missing calibration data to get a good calibration.

The warning is triggered because APP has no MasterBias or MasterDarkFlat with the same pixel dimensions as the flats to correct the flats. Only flats will never work properly.

Is the warning correct in the sense that you did not provide bias nor darkflats for those flats?

Cheers,

Mabula

 



   
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(@jehoener)
Red Giant
Joined: 7 years ago
Posts: 28
Topic starter  

Mabula:

Thank you.  Yes, that's correct.   I used raw flats provided in the iTelescope Calibration Library; but there are no flat darks available there.  I should be able to create a master bias from the raw bias frames. 

Perhaps I should try using the master flats provided in the iTelescope Calibration Library.  I assume that those are calibrated.



   
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(@mabula-admin)
Universe Admin
Joined: 9 years ago
Posts: 5363
 

Hi Joe @jehoener,

Great, then you got a valid warning from APP that the calibration workflow/path actually was incomplete to get proper results 😉

And now we can fix it as well, I would suggest to get the raw bias frames and then let app create a masterbias from that.

And if you can get some darks as well, you can also add Bad Pixel Map correction to get rid of possible hot pixels...

Mabula



   
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