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.
So I have a computer I've been using to test APP with, it's not, like, super powerful. Only about 17 years old (LOL). 8GB RAM, plenty of disk.
So I've been running it via a remote desktop and all that is great. (Note I am using Ubuntu)
But now it seems that APP crashed while I was in the midst of registration. Up to that point it was taking quite a long time, obviously maxed out on RAM and CPU utilization.
I was hoping to see why it crashed, but I cannot find any logs anwhere. I see the program in /opt. But nothing in /var/logs.
I suspect it crashed simply due to out of memory.
I guess I really need something better.
So.
1) no log files anywhere? Perhaps I can start APP myself and pass some options to java?
2) recommendations on a computer? I'm looking at a 12 core AMD Ryzen 9 5900x. With 128 GB Ram. 1TB SSD and 8TB HDD. I will put Ubuntu on it.
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Cheers,
Joel
@jjarvis Hi Joel,
Regarding the log, in case of a crash there should be a crash log in the installation directory of APP. Note that this will only be there if the crash happened due to any other reason than an Out Of Memory error. Unfortunately we are not 100% sure that the log is written on Linux. On Windows or macOS it will be. So the lack of a crash log on your system may indicate an Out Of Memory error but also may not.
Regarding a recommendation for a new computer: APP requires much RAM and disk space. It looks like the specs of the computer that you selected meet those requirements.
HTH, Wouter
if you have more budget for pc, I recommend choosing more capacities for SSD (PCIe Gen4)
