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.
I get this error while trying to combine the Halpha, SII and OIII images generated with APP. I am trying to do the SHO image of M16.
Encountered error in module:
CombineThreeChannelFloatBufferWorker
Error message:
java.lang.ArrayIndexOutOfBoundsException: Index 35595207 out of bounds for length 35595207
Cause:
Index 35595207 out of bounds for length 35595207
eD.a(Unknown Source)
eD.doInBackground(Unknown Source)
java.desktop/javax.swing.SwingWorker$1.call(Unknown Source)
java.base/java.util.concurrent.FutureTask.run(Unknown Source)
What APP version are you using?
@vincent-mod 2.0.0 beta 20
Could you try with beta 22? This has a lot of improvements mainly in memory usage etc.
@vincent-mod Same error.
Encountered error in module:
CombineThreeChannelFloatBufferWorker
Error message:
java.lang.ArrayIndexOutOfBoundsException: Index 35595207 out of bounds for length 35595207
Cause:
Index 35595207 out of bounds for length 35595207
eE.a(Unknown Source)
eE.doInBackground(Unknown Source)
java.desktop/javax.swing.SwingWorker$1.call(Unknown Source)
java.base/java.util.concurrent.FutureTask.run(Unknown Source)
Would you be able to upload data that causes the issue to our server? I can then check if it may be a bug or something.
@vincent-mod Uploaded the 3 files I am trying to combine. Directory name is same as your suggestion.
Thank you I will test it shortly
@vincent-mod Any findings?
Not yet, apologies, life got in the way. I will have a look right now.
Ok, interestingly I don't get any errors when combining the tif files you uploaded. Seems though that the colors are not really coming out properly, but no error. I forgot to ask what OS you're using?
@vincent-mod Mac os with the M1 chip.
So, why am I getting that error?
What is the process you are using to combine?
I select the formula for SHO, load in the tif files in the tool and press calculate, that works. But I'm using Windows, so I'll forward this to Mabula as he can try it on a Mac.
Hi @raoji,
I have tested your data on my mac with M1 chip and I do not get the error whatever I try to do with the RGB COmbine Tool trying to make an SHO composite.
So to be able to solve this, I need a bit more information:
- what formula do you choose when you load the 3 TIFF files into the RGB Combine Tool?
- do you set the correct filter while doing this? So select the S-II filter if you load the SII data.
If i load the 3 TIffs, I selected any of the SHO formula and for each TIFF assigned the right filter, so H-alpha for the h-alpha data etc...
All works as expected in beta 22 when I do this.
On a side note, the SHO result is not working well and I am very sure this has to do with the fact that your TIFF files are already strongly ! stretched results. This will work much better if you load the unstretched Ha, SII & O3 stacks into the tool. You will have much more flexibility to get a good result 😉
Mabula
