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 everyone! I recently took the 30 day free trial and i'm trying to learn APP. So far it's a masterpiece of a software. Today the toolbar is not working nor the light pollution tool nor anything. When i click the neutralise BG in the sliders to the right, i get this error message:
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I am just processing for now i haven't used integration so far. What should i do?Â
Thanks
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Hi Christos and thanks for trying APP!
I'm noticing you're using 2 formats at the same time (tif and fits). Though I think that should work, could you try with a fits of the other?
@vincent-mod thanks for the swift reply. I will try it yes. Something odd is happening. I input my image as a tiff and resize it to nearly 2000 pixels. Then I get the error message. BUT. If I save the resized image, close APP and load the resized image again as a 32 float fit, the error is gone and I can edit the image. This really worked so I kinda went around the problem but If I can, I want to fix it. Please tell me what do you think. I will try your solution too. Thanks a lot.
Well, normally it's best to stick with 1 format and process your raw data in APP. If you have the option to use fits as a raw format, just use that. Hope it worksout and if you have any further questions, just ask. 😉
