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.
Thanks to APP Beta 2 , my wife was able to get her target of IFN or flux near Iris Nebula. No matter how hard we tried , she could not get the subs to behave in PIX. so we tried APP beta2 and LP remover and Voila , saved .
here is the specs :Â
ES20839 Newt , ZWO 294MC, CGX,Â
750 x (60 and 90) sec mix. ( Unity) SQM 20.20 / Bortle 4.5.
everything done in APP.
here is the 2 results for both software. one is DBE/ABE the other is "remove light pollution" in APP 1.083 B2
pushing it hard below..Â
you can plainly see the difference... Thank Mabula.
@rcfmitch Really well done! Still, I wonder where the central circle in the first picture comes from. My suspicion is the flats so perhaps with the right flats you can eliminate that and reveal even more IFN?
I have the same camera (294MC) and had some issues similar to that first image when I first started taking flats.Â
I use APT for capture and the Auto Flats Aid just didn't like the camera. With an ADU of 25,000 the flats looked fine but over-compensated when being calibrated with the lights.Â
The solution for me was to use the timing figure given by the Auto Flats Aid but just shoot Flats manually as you would Light frames. Same for Dark Flats and the problem was instantly solved.
I don't know what you're using for capture but it might help. Flats are an issue for lots of people with the 294MC.
Thanks to APP Beta 2 , my wife was able to get her target of IFN or flux near Iris Nebula. No matter how hard we tried , she could not get the subs to behave in PIX. so we tried APP beta2 and LP remover and Voila , saved .
here is the specs :Â
ES20839 Newt , ZWO 294MC, CGX,Â
750 x (60 and 90) sec mix. ( Unity) SQM 20.20 / Bortle 4.5.
everything done in APP.
here is the 2 results for both software. one is DBE/ABE the other is "remove light pollution" in APP 1.083 B2
pushing it hard below..Â
you can plainly see the difference... Thank Mabula.
Â
Mitch
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Excellent Mitch @rcfmitch, that is a stunning result!
This is why I always use APP. There is a way to get DBE to deal with that particular scenario but it requires use of the geometric functions in DBE. Search for Adam Blocks tutorial on geometry for DBE. But, with APP there is no need and I still cannot find a processing suite that is better and easier to use for background neutralisation and gradient removal.
