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2026-10-09 APP 2.0.0-beta48 has been released !

This is mainly a bug fix release for the reported bugs in beta47. In addition it has a significant User Interface performance improvement noticable when you need to process 1000s of images in APP.

2026-10-03 APP 2.0.0-beta47 has been released !

This is a very big release... many code optimizations/rewrites, many parts of APP are much faster and more precise, especially star analysis and registration are much faster ! Big mosaics will go much faster šŸ™‚

And we introduce a new preview filter, which includes the new Adaptive Deep Sky Stretch and a General Levels Stretch, this has been long over due. The old preview filter (the panel on the right side to stretch and preview your data) has not been updated for a couple of years and it is a critical part of any APP session.

Adaptive Deep Sky StretchĀ or ADSS is a much more intuitive stretch algorithm. It is also color preserving (which is a great new addition in itself ! ) which means that the highlights are no longer bleached, color is maintained from the linear data while stretching. You can simply stretch your data using the sky background level and signal width sliders which work much easier and more intuitive. You no longer need to fiddle with the old complicated sliders with zoom buttons. All the zoom buttons for the sliders are made redundant. And you can enter slider values in the slider value fields yourself. I will make a youtube video in the coming days to explain and fully introduce ADSS. Once the video is ready, it will be highlighted on the forum.

RGB Combine upgrade !. The RGB Combine Tool has been rewritten mostly. The tool is faster and easier to use and most importantly, the Luminance slider to inject a luminance channel or channels into the RGB composite is now working correctly. It no longer bleaches the RGB colors. Combined with the new ADSS preview, you will get much better and easier great composites with great color! I will also explain this in a new youtube video.

Star Analysis Failed

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(@jnarro)
Molecular Cloud
Joined: 6 years ago
Posts: 3
Topic starter  

Hello I just downloaded and installed APP, for my first test I have an error in Star Analysis tab:

Star analysis failed on some of the frames !

Please check the problematic frames for any artefacts.

If the frames don't have clear artefacts or capture issues
and if the frames do contain stars,
please report this problem to support at

Ā 

Hpw and where do I check the problematic frames?

Ā 

Thank you



   
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(@wvreeven)
Quasar
Joined: 8 years ago
Posts: 2134
 

@jnarro Hola Jose,

If you close the popup with the error message then the problematic frames are highlighted in the files list. You can inspect those frames top see what may be causing the problem.



   
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(@jnarro)
Molecular Cloud
Joined: 6 years ago
Posts: 3
Topic starter  

Thanks, I checked but all the lights are in error, and I just can“t see what is the problem this lights were pre-processed in Pixinsight without an issue, so I will try with another set, kind of dissapointing



   
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(@wvreeven)
Quasar
Joined: 8 years ago
Posts: 2134
 

@jnarro What calibration files (darks, flats, dark flats, bias) did you use? What camera did you use to create all files? What software did you use to create all files? Do you get the same issue when not using any calibration files at all? Are you sure that the gain/offset or ISO and temperature for all files is the same?



   
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(@jnarro)
Molecular Cloud
Joined: 6 years ago
Posts: 3
Topic starter  

Hi, I use Darks, Flats and Darkflats, I capture with NINA with an Atik 414 EX OSC, no gain needed, but something weird happened, All the lights are gone APP there is nothing in the folders so I need to get another object, lucky me that I finished this lights with PI, weird very weird my data is gone.Ā 



   
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(@wvreeven)
Quasar
Joined: 8 years ago
Posts: 2134
 

@jnarro Hi, I am very sorry to hear that. And I honestly have no clue how that could have happened. I assure you that APP does not delete any files unless you explicitly ask for it.



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

It doesn't indeed. What could've happened is that you clicked on "delete" instead of "remove" in the list, APP then shows a very big warning in red that deleting means, deleting. šŸ™‚ Removing the data completely. Could that have been the case?



   
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