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.
It would be nice if we could set an automatic subframe rejection for subs where the stars weren't quite round or with other defects in them.
@imnewhere On tab 6 all the way at the top there is a slider that allows you to select the percentage of the subs to integrate. Doesn't that do what you are asking for?
@wvreeven nope, that would be fine if I were looking at slight outliers on FWHM or something, but what I am looking for is gross outliers. For instance, APP seems to weight on quality, but if you have one sub with oval stars it still integrates it and you no longer have round stars. I've had some that I sent through the whole process and ended up with bad results because I had a few bad subs due to cable drag or a meridian flip. Most of the time all my subs are good, but if I have some bad ones that will still register I want those tossed automatically if possible.
If you set it to non automatic and on Quality, does that still happen? It shouldn't with enough frames, but maybe if the flaws are really big it may still show up. But what Wouter suggests would also still work, in combination with quality (maybe set it manually to be sure APP is using that one) and then integrating like 90% or so, those bad frames should have low quality (big part of that score is the shape of the stars) and APP will throw those out.
Yep, I had a full set with cable drag and it happened. There were maybe 5 good subs out of 60.
5 good out of 60, ah, but then sorting the list (after you do registration) based on score, it should be very obvious which ones score much lower than the 5 good ones. And then you can simply set that slider Wouter mentioned all the way down to reject almost everything. The list then shows which ones are rejected. But in a case like this I would simply start over anyway.
