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 ran across this message while trying to process a large mosaic and was wondering if there was a way around this. This is working from images with drizzle data from other software (only because I am familiar with it and still learning APP). But Figure I will run into this on APP as well. Right now I am at 10 panels and plan to work up to 32 panels and possibly more.
I am processing this on a 6-core i7 machine with 64GB of RAM. I have my settings all the way up to use 63GB of the ram. Last night even after APP tried to scale it down the 0.92417 it would still fail. Though I would much prefer it not to attempt to scale down since I plan to add a lot more panels to this and want to keep it at full size.
Thanks!
Hi Dennis @sprinklestudios,
As the message shows, you are running into a technical limit here...
At the moment, APP can't handle images larger than 2gigapixel in monochrome, which is about 700 megapixel in RGB.
To still create the mosaic in APP, the only option is to run it downscaled at the moment.
You can at least try to run it with a scale of 0,25x just to check if it turns out right, before using 0,5x for instance.
The amount of memory that you have, 64GB, should not be the problem here.
Kind regards,
Mabula
Thank you very much Mabula for the reply! Do you have any plans to increase this limit in the future? I love using APP for mosaics but I really like shooting large mosaics. I am also trying to convince a friend into switching to APP and he shoots larger mosaics than I do.
Thank you!
Hi Dennis @sprinklestudios,
Yes, I do plan to make larger mosaics possible. But It needs quite some adjustments in APP at the moment. The internal image structure needs to be altered to make this possible. It's definitely on my worklist though 😉
Mabula
Any update on this one - I am getting a message that the image will be downscaled to a factor of "0.00000"... doesn't seem right!
I have seen that before yes, did still make the mosaic look fine so it might be some very small reduction which is outside of the number displayed.
