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.
Hello again,
APP only uses a fraction of my 64 GB RAM and there is no option to change it (APP 2 0 0 beta8 on a i7 W10 PC).
the CFG / config button has no "set memory usage" option.
I already read this thread :
APP is on c/programs
I deinstalled and reinstalled several times.
Peter
Hi @peter-s,
Since APP 2.0.0-beta1 you no longer need to set the amount of RAM that APP can use. Before 2.0, you could set it statically with the CFG button.
But with 2.0.0 APP will simply use the amount of RAM that is needed and this will be about 95% at most of your available RAM. If it uses much less... then APP does not need more for that task it is performing.
But... like you read in that other topic. If there are JAVA settings for the RAM amount in your windows environment variables, all JAVA application will be forced to use that (which is why this is very bad practice to start with...). So if APP only uses very little (like 1-4 GB of your 64GB) then you need to check the windows environment variables for sure and remove any setting in there for Java RAM like mentioned in that topic.
Did you check for the environment variables? How much RAM will APP use when you process some data?
Mabula
Hi Mabula,
thank you - even if APP processes a bigger set of images incl. F / DF / B etc. the amount of RAM used stays approximately in the same range - but instead I kept getting warnings "HDD memory low", when (in that particular case) the HD had 50 GB of free space and went low during integrating.
This led me to investigate why APP doesnt take the best option available.
update: what surprises me is that on my W10 PC as well as on my W10 notebook JAVA is NOT installed. So there is no JAVA config panel. Should I install JAVA?
Peter
No, a Java install is not necessary as APP provides its own. 50 GB of space is not a lot actually, for bigger datasets that would be an issue, if that can then be dealt with in free memory...maybe, but I doubt if that would be a stable approach as you could run into memory issues then quickly as well. Best approach would be to get a separate SSD specifically for processing.
Hi Vinvent, Mabula
Best approach would be to get a separate SSD specifically for processing.
sure, already done; separate SDD with lots of GB.
Back to my main question: how can I make APP to take more of my RAM?
- there is no Java config option because Java is not installed
- can you give me an expression to add in the environment settings?
- anything else?
thanks in advance
Peter
You can't, because like Mabula mentioned, APP simply uses what it needs. Giving it more RAM won't do anything in that regard. However, sometimes people have a registry setting for Java that sets a limit. Likely not the case for you I think, you could have a look in the environment variables for anything Java related. Click on the animation to see it better.
Hi Mabula,
thank you - even if APP processes a bigger set of images incl. F / DF / B etc. the amount of RAM used stays approximately in the same range - but instead I kept getting warnings "HDD memory low", when (in that particular case) the HD had 50 GB of free space and went low during integrating.
This led me to investigate why APP doesnt take the best option available.
update: what surprises me is that on my W10 PC as well as on my W10 notebook JAVA is NOT installed. So there is no JAVA config panel. Should I install JAVA?
Peter
Dear Peter @peter-s,
I think we have a misunderstanding here between the memory of the computer, which is RAM memory, and the storage of the computer which is the HDD space. The HDD space is used for the stack data, RAM memory is used for actual data processing and calculations on the data. At the moment APP can not yet mix both RAM memory and HDD storage to complete a stack task. It is however on our ToDo list to make this possible.
Mabula
