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!
Today I was stacking different focal lengths (250mm with Canon 60D and 510mm with 294MC Pro)
I selected disabled „same camera and optics“ and used the parameters once posted already in the forum.
I set the wider field of view as a reference frame and the stacked worked just perfect, that‘s awesome.
Problem is, that the noise in my wider field of view image is way higher than in the one where the cooled astro camera was used. (See Photo attached)
So what I would like to make now is another integration with the longer focal length set as a reference.
I tried this with using „crop“ in the Register Tool, but the problem is that the image resolultion is the same (same bad) as in the integration with the wider field of view.
My question is how can I set the longer focal length as a reference without losing resolution in the finished stack?
I don‘t know how to set the longer focal length as a reference without the „crop“ function and without losing resolution in the stacked image.
Thank you for your help in advance! 🙂
Clear Skies,
Chris
No solution? 🙁
I tried yesterday with integration mode „reference“ and I set the longer focal length as a reference frame and I also tried it with „crop“ and I cropped a bit of longer focal length away and hoped that the stack will be done from this crop, but it always used some kind of the wide angle shot as reference in the final stack...I can‘t really figure out how to get the high resolution picture with the longer focal length as a reference.
