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, I just downloaded the APP free trial version last night. I've tried at least 5 different times now but I keep getting the same result. When I load some Canon CR2 raw astro images into the bottom of the screen, they show up there. When I click on to one of them, it's supposed to show up in the screen. I can see the loading bar go across the top of the screen and the image title shows up at the top of the screen. Even the histogram to the right pops up with the image information. But the problem is the screen turns pure white.
Does anyone know what I am doing wrong?
I've been following this YouTube tutorial which is pretty good dispite it being a couple of years old. But when she clicks on her image at the bottom, the image pops right up on the screen like it's supposed to:Â
When I do the same, all I get is a white screen. Any suggestions would be appreciated. I would love to try APP but I'm not even getting beyond the first few steps. Thanks, CharlesÂ
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I was able to get help on Cloudy Nights where it was suggested to click on the GL3 button at the top.
It worked! That button was not mentioned in any YouTube tutorial I had watched.
Dear Charles @fm3aar,
I am glad that you have found a solution to the issue. APP 1.075 does have a bug in the OpenGL3 implementation. By clicking on the GL3 button, you are disabling OpenGL and thus are able to see the image using a software cpu renderer.
The next release, APP 1.076 should have this fixed though ;-). It will be released soon. You should be able to use OpenGL in the next release and image rendering on your screen should be much faster then.
Kind regards,
Mabula
Mabula, thanks. Charles
