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.
Hi all. Recently did a big stack with APP - about 1100 LRGB subs each about 32Mb - and also requested integration of all channels. APP said about 19GB would be required but actually used nearer to 90GB. I only just had enough space to do this and also it took about 7 hours. Maybe it didnt allow for the all channels integration?
Maybe this is normal behaviour for such a big stack - but if so perhaps APP could do the maths accordingly and warn that more space will be required.
Kind regards and take care all
Tom
Well, that's a rather big difference in the estimates so I'm not sure that is correct actually. 1100 frames are a lot though, I normally chop such data into several sessions to integrate and then combine later on.
Well, that's a rather big difference in the estimates so I'm not sure that is correct actually. 1100 frames are a lot though, I normally chop such data into several sessions to integrate and then combine later on.
I guess maybe that's the way to go then. But how do I know the reference frame from the first stack and use that as reference for subsequent stacks?
To find that out I think you still would need to do a star analysis on all frames. Then pick that one frame and use it for all sub-integrations. But I think, when data is consistent enough, you can just stack 300 or so frames with it selecting the reference from those each time.
