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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 🙂

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 Stretch 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.

registration only “works” once on a data set per license

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

Hello, I’m brand new to APP (still on trial version) but I’m trying to process a milky way mosaic. When I first loaded in my panels and made it to the registration tab I got a semi decent rms value (0.75) but after trying registration again I cannot get a value under 7 or so, even with the exact same settings. I’ve tried closing and re-opening the app, deleting and re-installing it, multiple versions, cropping the panels by a couple pixels, copying the panels to a different drive, only using half the panels, and countless other methods but can’t get back to any rms value under 7 even with identical settings to those I got the .75 the first time. I eventually tried getting a trial version with a different email and that worked for the first time but then went up to above 7 so it’s definitely something with the license. I tried again with a different set of mosaic panels and it did the same thing with a low rms the first time and then never being able to get back to that number. Is there any fix for this? I’m guessing the program is recognizing I’ve registered those frames before on that license and is messing something up. Any help would be appreciated.


This topic was modified 2 years ago by David Eckerson

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

Also another thing I noticed is no mater what I did (closing the app, deleting and reinstalling, using different versions, etc) all my settings, save directory, and all that was saved and wasn’t reset to default. Is there any way to clear the cache from the license or something as I’m thinking in addition to storing all those settings and stuff, it’s storing something that is messing up the registration.



   
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