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 just did my second processing and I have been very happy with the results. Â This time I did each step manually. Â Is it necessary to save after each step, ie for REGISTER, NORMALIZE, etc. before I move on to the next step? Â I seems like I ended up with more files written when I did this.
Thanks
It's not no, only when you choose to save them in between.
To expand on Vincent's answer, in general you can go from tab 1 straight to tab 6 and click the Integrate button. All steps in between will be executed automatically and you'll end up with the integration result. If you have loaded raw calibration frames in step 1 then the masters for those will be created and saved automatically as well.
Thanks for the replies. Â What I was concerned about was if when walking through manually that the next step required saved images from the previous step.
@seaquel47 As long as you don't shut down APP or load other images, the processed images of the intermediate steps will remain in memory so you can go through the steps one by one if you like.
